TY  - BOOK
AU  - MARSHALL, A.J.
AU  - WILLIAMS, W.D.
TI  - TEXTBOOK OF ZOOLOGY, Volume I: INVERTEBRATES
SN  - 0 333 14107 5
U1  - 592 
PY  - 1982///
CY  - London
PB  - Macmillan and Company Limited, London 
ER  -