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The genius Antennaria in Northwestern Canada
Vol 64, Iss 1, Page 1
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Sphaeriidae of Athabaska and Great Slave Lakes, Northwestern Canada
Vol 64, Iss 1, Page 25
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Nesting of the Red Crossbill in Pakenham Township, Lanark County, Ontario
Vol 64, Iss 1, Page 32
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Supposed natural hybrid between Agropyron and Hystrix
Vol 64, Iss 1, Page 39
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The productivity and sex survival of elk, Banff National Park, Alberta
Vol 64, Iss 1, Page 40
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Five new Compositae from Yukon - Alaska
Vol 64, Iss 1, Page 43
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North-West Passage' plants in the Scott Polar Research Institute
Vol 64, Iss 1, Page 45
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The Steller Eider in British Columbia
Vol 64, Iss 1, Page 51
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Feeding flights of Common Terns across the Niagara Peninsula
Vol 64, Iss 1, Page 51
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Red Crossbills collected in the Ottawa District
Vol 64, Iss 1, Page 52
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Pintail and Ring-necked Duck breeding in the Ottawa region
Vol 64, Iss 1, Page 52
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American Wild Flowers, by Harold Moldenke [Review]
Vol 64, Iss 1, Page 53
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Spiders, by T. B. Kurata [Review]
Vol 64, Iss 1, Page 54
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Birds of Arctic Alaska, by Alfred M. Bailey [Review]
Vol 64, Iss 1, Page 54
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Notes on the birds of the Ungava Bay District
Vol 64, Iss 2, Page 55
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William Henry Mousley, 1865-1949 [Obituary]
Vol 64, Iss 2, Page 67
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The Ring-necked Duck (Aythya collaris) in the Counties of Kamouraska and L'Islet, Province of Quebec
Vol 64, Iss 2, Page 70
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Christmas Bird Census, 1949
Vol 64, Iss 2, Page 71
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Fifth census of non-passerine birds in the bird sanctuaries of the North Shore of the Gulf of St. Lawrence
Vol 64, Iss 2, Page 73
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Christmas Bird Census, 1949, continued
Vol 64, Iss 2, Page 77
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Observations of Ruffed Grouse in Southern Ontario with a discussion of cycles
Vol 64, Iss 2, Page 82
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Some herpetological records from the Quetico Provincial Park of Ontario
Vol 64, Iss 2, Page 86
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Some counts of bird populations in coniferous forests near the limit of trees
Vol 64, Iss 2, Page 87
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An unusual Maskinonge from Little Vermillion Lake, Ontario, by G. S. Cameron [Review]
Vol 64, Iss 2, Page 88
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Plants collected by B. John Woodruff on the west coast of Melville Peninsula, Franklin District, N.W.T., Canada
Vol 64, Iss 2, Page 90
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An albino mud puppy near Fort William, Ontario
Vol 64, Iss 2, Page 92
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Migration of Black Swift
Vol 64, Iss 2, Page 93
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A new record for Palm Warbler
Vol 64, Iss 2, Page 93
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Purple Sandpiper in Manitoba
Vol 64, Iss 2, Page 94
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The Blue Grosbeak in Western Ontario
Vol 64, Iss 2, Page 94
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Migration of Western Grebe on British Columbia coast
Vol 64, Iss 2, Page 94
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Bird notes trom Great Whale River, Que.
Vol 64, Iss 3, Page 95
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Food habits of the marten (Martes americana) in the Rocky Mountain region of Canada
Vol 64, Iss 3, Page 100
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Description of a new northwestern Geothlypis
Vol 64, Iss 3, Page 104
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Botanical research in Scandinavia: 375 contemporary workers and their special interests
Vol 64, Iss 3, Page 105
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European hare introduced into the District of Thunder Bay, Ontario
Vol 64, Iss 3, Page 122
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Mola mola (Linnaeus) from the lower St. Lawrence
Vol 64, Iss 3, Page 124
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Partial albinism in the Bronzed Grackle (Quiscalus quiscula versicolor)
Vol 64, Iss 3, Page 125
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Shrubs of Michigan, by Cecil Billington [Review]
Vol 64, Iss 3, Page 126
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The Second Annual Report of the Severn Wildflower Trust [Review]
Vol 64, Iss 3, Page 126
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Plants collected in the Dundas Marsh, Hamilton, Ontario, 1946
Vol 64, Iss 4, Page 127
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The fauna of the Royal Botanical Gardens, Hamilton, Ontario
Vol 64, Iss 4, Page 130
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Defense behavior in the mantis
Vol 64, Iss 4, Page 133
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Birds observed in the Yukon Territory during the summer of 1949
Vol 64, Iss 4, Page 135
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Northern breeding waterfowl summering at Niagara Falls
Vol 64, Iss 4, Page 139
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Additional notes on the birds of Renfrew County, Ontario
Vol 64, Iss 4, Page 140
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Another parallel mutation in Oenothera
Vol 64, Iss 4, Page 142
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Additions to the birds of Simcoe County, Ontario
Vol 64, Iss 4, Page 145
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Directions for using a plastic adhesive in mounting pressed botanical specimens
Vol 64, Iss 4, Page 148
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Francis J. A. Morris (1869-1949) [Obituary]
Vol 64, Iss 4, Page 150
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An abnormally colored Woodcock (Philohela minor)
Vol 64, Iss 4, Page 153
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June record of a European Widgeon in Manitoba
Vol 64, Iss 4, Page 153
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Arctic fox on Cape Breton Island
Vol 64, Iss 4, Page 154
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Cat-fox association
Vol 64, Iss 4, Page 154
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Bobolink at Cochrane, Ontario
Vol 64, Iss 4, Page 154
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Unusual behaviour of Wilson's Snipe
Vol 64, Iss 4, Page 155
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The roosting behaviour of a Snow Goose at Montreal
Vol 64, Iss 4, Page 155
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The Semipalmated Sandpiper (Ereunetes pusillus) in southwestern New Brunswick
Vol 64, Iss 4, Page 155
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The first record of the Chiselmouth, Acrocheilus alutaceus Agassiz and Pickering, from British Columbia
Vol 64, Iss 4, Page 156
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The Sandhill Cranes, by Lawrence H. Walkinshaw [Review]
Vol 64, Iss 4, Page 156
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The Siphonoptera of Canada, by George P. Holland [Review]
Vol 64, Iss 4, Page 156
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Bird Watching , Fifteenth Annual Report of the British Trust for Ornithology [Review]
Vol 64, Iss 4, Page 157
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Mammals of North America, by Victor H. Calalane [Review]
Vol 64, Iss 4, Page 158
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Introducing the Insect, by F. A. Urquart [Review]
Vol 64, Iss 4, Page 158
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Abundance of certain mammals of the Geraldton Forest District, Ontario
Vol 64, Iss 5, Page 159
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Size of summer bird grouping, Texas to the Yukon
Vol 64, Iss 5, Page 163
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The Peromyscus maniculatus bairdii complex in Manitoba
Vol 64, Iss 5, Page 169
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A study of screech owls in southern Ontario
Vol 64, Iss 5, Page 177
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Some Myxomycetes of Canada
Vol 64, Iss 5, Page 180
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Effect on trees of extremes of climate in southern Alberta
Vol 64, Iss 5, Page 185
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Recent bird records for the Ottawa District
Vol 64, Iss 5, Page 186
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A Worm-eating Warbler (Helmitheros vermivorus) at St. Andrews, N.B.
Vol 64, Iss 5, Page 187
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Two records of shrimps from English Bay, B.C.
Vol 64, Iss 5, Page 188
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The Scissor- tailed Flycatcher in New Brunswick
Vol 64, Iss 5, Page 188
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Salvelinus alpinus in Walton Lake, New Brunswick
Vol 64, Iss 5, Page 189
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Unusual behaviour of Cormorants
Vol 64, Iss 5, Page 189
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Drawings of British plants, by Stella Ross-Craig [review]
Vol 64, Iss 5, Page 190
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South Nation Valley Interim Report 1948, Department of Planning and Development [Review]
Vol 64, Iss 5, Page 190
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Audubon's Birds of America. Popular Edition [Review]
Vol 64, Iss 5, Page 190
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National Wildlife and Conservation Digest [Review]
Vol 64, Iss 5, Page 190
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Pectinatella magnifica Leidy (Bryozoa) in Dundas Marsh, Hamilton, Ontario
Vol 64, Iss 6, Page 191
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Notes on the vertebrates, except fishes, of the Sault Ste. Marie region of Ontario
Vol 64, Iss 6, Page 192
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Breeding behaviour of the Ring-necked Pheasant on Pelee Island, Ontario
Vol 64, Iss 6, Page 201
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Colour phase investigations on the Screech Owl in Ontario
Vol 64, Iss 6, Page 208
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The dates of publication of the Icones Filicum by W. J. Hooker and R. K. Greville
Vol 64, Iss 6, Page 212
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H. B. Conover's bird work in Yukon
Vol 64, Iss 6, Page 214
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Annual Report for 1948 of the Province of Quebec Society for the Protection of Birds [Review]
Vol 64, Iss 6, Page 220
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W. E. Saunders, Naturalist, by R. J. Rutter, ed. [Review]
Vol 64, Iss 6, Page 220
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An Annotated List of the Birds of the East Kootenay, British Columbia. By Walter B. Johnstone [Review]
Vol 64, Iss 6, Page 220
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Florida Gallinule, Gallinula chloropus cachinnans, in Thunder Bay District
Vol 64, Iss 6, Page 221
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The Burrowing Owl in Alberta
Vol 64, Iss 6, Page 221
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Belated Swallows in the Maritimes
Vol 64, Iss 6, Page 221