Hayward, P.J. & Ryland, J.S. British Ascophoran Bryozoans. Keys and Notes for the Identification of the Species. 1st. Ed. Pub. Academic Press. 1979
pp.312 with b/w. illus., throughout. 8vo. Fine softback.
Synopses of the British Fauna (New Series) No. 14.
£8.50 [Ref: 65668]