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Zoology -- Animals -- 7 Encyclopedias 5 Juvenile literature 5 Pictorial works -- 3 Encyclopedias, Juvenile 2 Juvenile literature -- 2 more ... Vertebrates -- 2 Animal -- 1 Animal behavior -- 1 Antartica -- 1 Antartika -- 1 Dictionaries 1 Dinosaurs -- 1 Emperor penguin -- 1 Encyclopedias -- 1 Evolution (Biology) 1 Journeys -- 1 Natural history 1 Natural history -- 1 Peter -- 1 Pictorial works 1 Plants -- 1 Rainforest animals 1 Rainforest animals -- 1 Variation 1 Wilderness areas -- 1 Women zeologists 1 Zoology 1 less ...