New York: Facts on File Wildlife Conservation Trust of India 2006
Bwana Game : the life story of George Adamson "A man-eating lion Panthera leo from Tanzania with a toothache"

"Pleistocene remains of the lion-like cat Panthera atrox from the Yukon Territory and northern Alaska".

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تنزيل صور اسد
The big cats and their fossil relatives : an illustrated guide to their evolution and natural history
صور اسد Lion صور اسود خلفيات HD
London: Commonwealth Institute of Entomology
صور اسد كبير للفيس بوك وتويتر وانستقرام
"Prey preferences of the lion Panthera leo "
Stephen O'Brien y Warren Johnson 2008 Doi H, Reynolds B 1967
Chicago: University of Chicago Press Yukon Beringia Interpretive Centre website

"The near eastern origin of cat domestication".

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بالصور خلفيات اسد جميلة جداً للكمبيوتر Lions Wallpaper HD
Bauer H, Van Der Merwe S 2002
أسد
"The Pleistocene cave lion, Panthera spelaea Carnivora, Felidae from Yakutia, Russia"
أسد
Field Museum of Natural History