TY  - GEN
AU  - Hayward, Peter Joseph
AU  - Ryland, John Stanley
ED  - Linnean Society of London
TI  - Cheilostomatous Bryozoa: part 2: Hippothooidea - Celleporoidea 
T2  - Synopses of the British Fauna
SN  - 1851532633
PY  - 1999///
CY  - Shrewsbury
PB  - Field Studies Council
KW  - Monographie
ER  -