A colour guide to familiar marshland and freshwater birds /
Felix, Jir̆í.
Hísek, Kvĕtoslav.
Kuthanová, Olga.
London Octopus Books
1975
Originally published: in Czech. Prague : Artia, 1975
Bibliography: p.180-181. - Includes index
Water-birds
Fresh-water biology.
Marshes.