TY  - BOOK
AU  - Masters, Gilbert M.
AU  -  Gilbert M. Masters.
TI  - Introduction to environmental engineering and science
SN  - 8120308816
U1  - 628 MAS-I 1991 11803 
CY  - New Yprk
PB  - Prentice Hall
KW  - Environmental engineering.Environmental protection
ER  -