TY  - BOOK
AU  - Sulphey, M.M.
AU  - Safeer, M.M. 
TI  - Introduction to enviroment management
SN  - 9788120353510
U1  - 363.7 
PY  - 2017///
CY  - Delhi
PB  - PHI Learning
N1  - Includes index
ER  -