Hybrid ducks, including descriptions of two crosses of Bucephala and Lophodytes /
Ball, Stanley C.
Hybrid ducks, including descriptions of two crosses of Bucephala and Lophodytes / by Stanley C. Ball. - New Haven : Peabody Museum of Natural History, Yale University, 1934. - 26 p. : ill. ; 24 cm. - Bulletin, 3 0079-032X ; .
Hybrid ducks, including descriptions of two crosses of Bucephala and Lophodytes / by Stanley C. Ball. - New Haven : Peabody Museum of Natural History, Yale University, 1934. - 26 p. : ill. ; 24 cm. - Bulletin, 3 0079-032X ; .