A study of a group of penguins of known age.

Bibliographic Details
Main Author:	Richdale, L. E. (Lancelot Eric)
Format:	Book
Language:	English
Published:	Dunedin, N. Z. : Otago Daily Times and Witness Newspapers Co., 1949.
Series:	Biological monographs ; no. 1.
Subjects:	Penguins.

Description
Physical Description:	viii, 88 pages : illustrations ; 25 cm.
Bibliography:	"Literature cited" : pages 83-85.