TY  - BOOK
AU  - Dutta A.K.
TI  - Nature Quitz
SN  - 0000023070
U1  - 628.1 
PY  - 1991///
CY  - New Delhi
PB  - Konark Publication
KW  -  Quitz
KW  - Nature
KW  - Water supply & sanitary Engg
ER  -