TY - BOOK AU - Perrin,W.F. TI - Dolphins, porpoises, and whales: an action plan for the conservation of biological diversity : 1988-1992 SN - 2-88032-961-2 AV - QL713.2 D65 1989 PY - 1989/// CY - Gland, Switzerland PB - I.U.C.N. N1 - Incluye bibliografia ER -