TY  - BOOK
AU  - Marshall A.J.
AU  - William W. D.
TI  - Text book of zoology invertebrates
SN  - 0333141075
U1  - 592 
PY  - 1992///
CY  - New Delhi
PB  - CBS Publishers
KW  - Invertebrates
KW  - Zoology
ER  -