TY  - BOOK
AU  - Singhal, V. P.
TI  - Samaja aevam‌ paryavaraṇa abhiyantriki
SN  - 8180145339
U1  - 301.310973 
PY  - 2009///
CY  - New Delhi
PB  - Standard Publishers Distributors
KW  - 1. Environmental Engineering
ER  -