TY  - BOOK
AU  - Masters,Gilbert M.
AU  - Ela,Wendell P.
TI  - Introduction to environmental engineering and science 
SN  - 9788120336919
U1  - 363.7 
PY  - 2008///
CY  - New Delhi
PB  - PHI Learning Private Ltd.
KW  - Environment
N1  - Includes Bibliographical references and index
ER  -