TY  - BOOK
AU  - Davis, Mackenzie L.
AU  - Conwell, David A.
TI  - Introductions to environmental engineering
U1  - 628 22
PY  - 2009///
CY  - New Delhi
PB  - Mcgraw-Hill
KW  - Enviromental Engineering
N1  - Includes bibliographical reference and index
ER  -