Ducks, geese, and swans / edited by Janet Kear ; illustrated by Mark Hulme - 2 volúmenes (xxi, 908 páginas) : hojas (algunas a color), mapas - Bird families of the world ; 1 . ISBN: 0198546459 Subjects--Topical Terms: PatosGansosCisnes LC Class. No.: QL696.A52 / D84 Dewey Class. No.: 598.4/1