TY  - BOOK
AU  - Marshall, A.J.
AU  - Williams, W.D.
TI  - Textbook of zoology
SN  - 81-239-0035-X
U1  - 591 
PY  - 1992///
CY  - New Delhi
PB  - CBS Publisher
KW  - Zoology
KW  - Invertebrates
ER  -