Výsledky vyhledávání
- Administration of the Marine mammal protection act of 1972 [elektronický zdroj]. . Washington : National Marine Fisheries Service, National Oceanic and Atmospheric Administration
- The Marine Mammal Protection Act of 1972 annual report [elektronický zdroj]. . Washington, D.C. : U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, [1978-
- Sirenews [elektronický zdroj] : newsletter of the IUCN/SSC Sirenia Specialist Group. . Washington, D.C., USA : IUCN/SSC Sirenia Specialist Group