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AN ANALYSIS OF THE CHUFFING VOCALIZATION IN THE POLAR BEAR (URSUS MARITIMUS).WEMMER C; VON EBERS M; SCOW K et al.1976; J. ZOOL.; G.B.; DA. 1976; VOL. 180; NO 3; PP. 425-439; BIBL. 19 REF.Article

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AN EVALUATION OF THE USE OF ERTS-1 SATELLITE IMAGERY FOR GRIZZLY BEAR HABITAT ANALYSIS. = EVALUATION DE L'UTILISATION DES IMAGES DONNEES PAR LE SATELLITE ERTS-1 POUR L'ETUDE DE L'HABITAT D'URSUS HORRIBILISVARNEY JR; CRAIGHEAD JJ; SUMMER JS et al.1974; IN: EARTH RESOUR. TECHNOL. SATELL. 1. SYMP. 3. PROC.; WASHINGTON, D.C.; 1973; WASHINGTON; N.A.S.A.; DA. 1974; VOL. 1; PP. 1653-1670; BIBL. 14 REF.Conference Paper

MOLAR MEASUREMENTS AS A TAXONOMIC TOOL IN URSUS.GORDON KR.1977; J. MAMMAL.; U.S.A.; DA. 1977; VOL. 58; NO 2; PP. 247-248; BIBL. 8 REF.Article

TIME REQUIREMENT FOR CAPACITATION OF BOAR SPERMATOZOA ASSESSED BY THEIR ABILITY TO PENETRATE THE ZONA-FREE HAMSTER EGGIMAI H; NIWA K; IRITANI A et al.1979; J. REPRODUCT. FERTIL.; GBR; DA. 1979; VOL. 56; NO 2; PP. 489-492; BIBL. 12 REF.Article

Hibernation and seasonal fasting in bears: the energetic costs and consequences for polar bearsROBBINS, Charles T; LOPEZ-ALFARO, Claudia; RODE, Karyn D et al.Journal of mammalogy. 2012, Vol 93, Num 6, pp 1493-1503, issn 0022-2372, 11 p.Article

INHERITANCE OF COAT COLOR AND CHANGES IN PELAGE COLORATION IN BLACK HEARS IN NORTHEASTERN MINNESOTAROGERS LL.1980; J. MAMMAL.; ISSN 0022-2372; USA; DA. 1980; VOL. 61; NO 2; PP. 324-327; BIBL. 18 REF.Article

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Survival rates required to sustain bear populationsEBERHARDT, L. L.The Journal of wildlife management. 1990, Vol 54, Num 4, pp 587-590, issn 0022-541XArticle

CHARACTERISTICS OF BLACK BEAR DENS ON LONG ISLAND, WASHINGTON.LINDZEY FG; MESLOW EC.1976; NORTHWEST SCI.; U.S.A.; DA. 1976; VOL. 50; NO 4; PP. 236-242; BIBL. 9 REF.Article

PROTEIN METABOLISM IN THE BLACK BEAR BEFORE AND DURING HIBERNATION.LUNDBERG DA; NELSON RA; WAHNER HW et al.1976; MAYO CLIN. PROC.; U.S.A.; DA. 1976; VOL. 51; NO 11-12; PP. 716-722; BIBL. 18 REF.Article

Digestive and metabolic efficiencies of grizzly and black bearsPORITCHARD, G. T; ROBBINS, C. T.Canadian journal of zoology. 1990, Vol 68, Num 8, pp 1645-1651, issn 0008-4301Article

PLASMA PROGESTERONE CONCENTRATIONS IN PREGNENT AND NON-PREGNANT BLACK BEARS (URSUS AMERICANUS)FORESMAN KR; DANIEL JC JR.1983; JOURNAL OF REPRODUCTION AND FERTILITY; ISSN 0022-4251; GBR; DA. 1983; VOL. 68; NO 1; PP. 235-239; BIBL. 24 REF.Article

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