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The Herbarium as a Data-Bank
Vol 33, Iss 1, Page 3
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Ornamental Plant Introduction- Building on the Past
Vol 33, Iss 1, Page 13
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The Botanist and the Computer
Vol 33, Iss 1, Page 26
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Plant Ailments
Vol 33, Iss 1, Page 37
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Cambial Activity in Trees
Vol 33, Iss 1, Page 46
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The Wood Collection- What Should Be Its Future?
Vol 33, Iss 1, Page 67
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Eastern North American Plants in Cultivation
Vol 33, Iss 1, Page 81
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The History of Ornamental Horticulture in America
Vol 33, Iss 1, Page 97
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Cold Hardiness of Woody Plants
Vol 33, Iss 2, Page 113
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Plant Propagation- The Union of Art and Science
Vol 33, Iss 2, Page 119
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Arboreta, Genes, and Plant Improvement
Vol 33, Iss 2, Page 127
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Chromosome Cytology and Arboreta: A Marriage of Convenience
Vol 33, Iss 2, Page 135
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Horticultural Education- Participants Warmly Invited
Vol 33, Iss 2, Page 147
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The Role of Lower Plants in Research Programs in Arboreta and Botanical Gardens
Vol 33, Iss 2, Page 157
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Francis Parkman as Horticulturist
Vol 33, Iss 3, Page 169
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Streptocarpus 'Constant Nymph' and Its Mutants
Vol 33, Iss 3, Page 184
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In Search of Tropical Gentians
Vol 33, Iss 3, Page 189
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Plant Registrations
Vol 33, Iss 3, Page 199
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Community Tree Giveaway
Vol 33, Iss 3, Page 210
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Notes from the Arnold Arboretum: Memorial Gifts and Plantings
Vol 33, Iss 3, Page 213
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Arnoldia Reviews
Vol 33, Iss 3, Page 216
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The Decline of the Apple
Vol 33, Iss 4, Page 217
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Some Afterthoughts on Apples
Vol 33, Iss 4, Page 228
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The Ralph F. Perry Wood Collection
Vol 33, Iss 4, Page 231
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Struggle for Survival
Vol 33, Iss 4, Page 235
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The Arboretum's Labels: A Valuable Teaching Aid
Vol 33, Iss 4, Page 239
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News from the Arnold Arboretum
Vol 33, Iss 4, Page 245
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Arnoldia Reviews
Vol 33, Iss 4, Page 248
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A Guide to Selecting a Strong and Healthy Young Tree
Vol 33, Iss 5, Page 261
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Cranberries- The Last One Hundred Years
Vol 33, Iss 5, Page 284
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Willow Oak (Quercus phellos): A Fenway Jewel
Vol 33, Iss 5, Page 292
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Arnoldia Reviews
Vol 33, Iss 5, Page 295
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The Director's Report: the Arnold Arboretum during the fiscal year ended June 30, 1973
Vol 33, Iss 6, Page 309
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Notes from the Arnold Arboretum
Vol 33, Iss 6, Page 341
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Index to Volume XXXIII
Vol 33, Page 343