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https://www.gutenberg.org/ebooks/44785 The Beaked Whales of the Family Ziphiidae by Frederick W. True | Project Gutenberg Free eBook digitized and proofread by volunteers. frederick w true beaked whales https://www.animaldiversity.org/accounts/Ziphiidae/ Ziphiidae (beaked whales) | INFORMATION | Animal Diversity Web beaked whales ziphiidae information animal diversity