Ctenostome Bryozoans : keys and notes for the identification of the species /
Hayward, Peter Joseph
Ctenostome Bryozoans : keys and notes for the identification of the species / P. J. Hayward - VII, 169 S.: Ill.; - Synopses of the British Fauna ; N.S. 33 .
Ctenostome Bryozoans : keys and notes for the identification of the species / P. J. Hayward - VII, 169 S.: Ill.; - Synopses of the British Fauna ; N.S. 33 .