TY  - BOOK
AU  - Raven, Peter H.
AU  - Berg, Linda R.
AU  - Johnson, George B.
TI  - Environment
SN  - 0030143292
U1  - Q 333.7 RAV 
PY  - 1993///
CY  - Fortworth, Tx.
PB  - Saunders College Publishing
KW  - Environmental sciences
KW  - Environmental degradation
N1  - Includes bibliographical references and index
ER  -