TY  - BOOK
AU  - Ray,Bill T.
TI  - Environmental engineering
SN  - 0534206522
PY  - 1995///
CY  - Boston, Mass.
PB  - PWS
KW  - Environmental engineering
KW  - Environmental sciences
N1  - Includes bibliographical references and index; Contents : Laws and regulations--Ecology and the environment
ER  -