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NEST-SITE SELECTION BY SAGE THRASHERS IN SOUTHEASTERN IDAHO
Vol 51, Iss 3, Page 261, Date 1991
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FISHES OF BLY TUNNEL, LASSEN COUNTY, CALIFORNIA
Vol 51, Iss 3, Page 267, Date 1991
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FACTORS INFLUENCING DISSOLVED OXYGEN CONCENTRATIONS DURING WINTER IN SMALL WYOMING RESERVOIRS
Vol 51, Iss 3, Page 282, Date 1991
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NONGAME WILDLIFE COMMUNITIES IN GRAZED AND UNGRAZED MONTANE RIPARIAN SITES
Vol 51, Iss 3, Page 286, Date 1991
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NEW RECORDS OF VASCULAR PLANTS ON THE LASAL MOUNTAINS, UTAH
Vol 51, Iss 3, Page 293, Date 1991
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CHECKLIST OF THE CULTIVATED TREES OF ST. GEORGE, WASHINGTON COUNTY, UTAH
Vol 51, Iss 3, Page 296, Date 1991
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IMPACTS OF BLACK-TAILED PRAIRIE DOG RODENTICIDES ON NONTARGET PASSERINES
Vol 51, Iss 4, Page 301, Date 1991
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VEGETATION AND SOIL ZONATION ASSOCIATED WITH JUNIPERUS PINCHOTII SUDW. TREES
Vol 51, Iss 4, Page 316, Date 1991
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TWO NEW SPECIES OF AUREALCAULIS (OSMUNDACEAE) FROM NORTHWESTERN NEW MEXICO
Vol 51, Iss 4, Page 325, Date 1991
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RADIO HARNESS SYSTEM FOR BOBCAT KITTENS
Vol 51, Iss 4, Page 343, Date 1991
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Flower mites of Trinidad 2. The genus Proctolaelaps (Acari: Ascidae)
Vol 51, Page 348, Date 1991
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OXYTROPIS DC.—NAMES, BASIONYMS, TYPES, AND SYNONYMS—FLORA NORTH AMERICA PROJECT
Vol 51, Iss 4, Page 377, Date 1991
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ALKALOIDAL RELATIONSHIPS IN THE GENUS ARCTOMECON (PAPAVERACEAE) AND HERBIVORY IN A. HUMILIS
Vol 51, Iss 4, Page 397, Date 1991
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SCANNING ELECTRON MICROSCOPIC STUDY OF THE MALE GENITALIA OF THE NORTH AMERICAN ALDERFLY GENUS SIALIS (MEGALOPTERA: SIALIDAE)
Vol 51, Iss 4, Page 404, Date 1991
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New species of Sialis from southern California (Megaloptera: Sialidae)
Vol 51, Page 411, Date 1991
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UNUSUAL FORM OF OPUNTIA RAMOSISSIMA ENGELMANN
Vol 51, Iss 4, Page 414, Date 1991