Polar bear reproductive biology and denning / by Jack W. Lentfer von Lentfer, Jack W

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Environmental contaminants and parasites in polar bears / by Jack W. Lentfer von Lentfer, Jack W

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The effects of ocean currents and ice movement on polar bear activity / by Jack W. Lentfer von Lentfer, Jack W

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Mercury in Polar Bears from Alaska von Lentfer, Jack W, Galster, William A

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Denning Ecology of Brown Bears on Admiralty and Chichagof Islands von Schoen, John W., Beier, Lavern R., Lentfer, Jack W., Johnson, Loyal J.

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Alaskan Polar Bear Movements from Mark and Recovery von Lentfer, Jack W.

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Polar Bear Denning on Drifting Sea Ice von Lentfer, Jack W.

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Occurrence of a Northern Fur Seal near Wainwright, Alaska von Lentfer, Jack W.

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A Technique for Immobilizing and Marking Polar Bears von Lentfer, Jack W.

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A Two-Year Study of the Rocky Mountain Goat in the Crazy Mountains, Montana von Lentfer, Jack W.

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Polar Bear Management in Alaska von Lentfer, Jack W.

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Polar Bear: Sea Ice Relationships von Lentfer, Jack W.

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Past and Present Status of Polar Bears in Alaska von Amstrup, Steven C., Stirling, Ian, Lentfer, Jack W.

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Alaskan Polar Bear Denning von Lentfer, Jack W., Hensel, Richard J.

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Modes of Thermal Protection in Polar Bear Cubs - at Birth and upon Emergence from the Den von Blix,Arnoldus Schytte, Lentfer,Jack W

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Differential Distribution of Brown Bears on Admiralty Island, Southeast Alaska: A Preliminary Assessment von Schoen, John W., Lentfer, Jack W., Beier, Lavern

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Population Characteristics of Alaskan Polar Bears von Lentfer, Jack W., Hensel, Richard J., Gilbert, James R., Sorensen, Fred E.

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Remarks on Denning Habits of Alaska Brown Bears von Lentfer, Jack W., Hensel, Richard J., Miller, Leo H., Glenn, Leland P., Berns, Vernon D.

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