TY  - BOOK
AU  - KOTPAL (R L).
TI  - Zoology phylum-2: porifera. Ed.7
SN  - 81 7133 531 4
U1  - 591 KOTZ 
PY  - 2001///
CY  - Meerut
PB  - Rastogi Publications
KW  - Porifera
ER  -