Namu : making friends with a killer whale / by Ronald M. Fisher ; [ed.: Melville Bell Grosvenor, Gilbert M. Grosvenor]. - [S.l.] : Nat. Georg. Soc., 1973. - 32 გვ. : ill. ; 29 cm.см.. - (Books for Young Explorers/National Geographic Society)[MFN: 21643]