Birds of lake, river, marsh and field /
Flegg, Jim.
Jonsson, LarsAdaptationsFagler i naturen, sjö, a, träsk och akermark.
Tanner, Roger.
Harmondsworth Penguin
1978
Translation and adaptation of: 'Faglar i naturen, sjö, a, träsk och akermark'. Stockholm : Wahlström och Widstrand, 1977
Bibliography: p.128-129. - Includes index
Birds
Freshwater animals
Water-birds