NATIONAL GEOGRAPHIC HAYVANLAR SERİSİ KİTAPLARINDAN KATİL BALİNA MUHTEŞEM DENİZ HAYVANLARI / DENİZ MEMELİLERİ YABAN HAYATI ALARMI!

1- NAMU - Making Friends – Killer Whale / Ronald M. Fisher – New York: National Geographic Society, 1973
32 sayfa; 23x27 cm

2- AMAZING ANİMALS of the Sea - Marine Mammals / Erwin and Peggy Bauer – New York: National Geographic Society, 1981
104 sayfa; 23x27 cm

3- WILDLIFE ALERT ! The Struggle to Survive / Gene S. Stuart – New York: National Geographic Society, 1980
104 sayfa; 23x27 cm