TY  - GEN
AU  - Raven, Peter H.
AU  - Berg, Linda R.
TI  - Environment
SN  - 0030315719
U1  - 333.7 
PY  - 1993///
CY  - Orlando
PB  - Harcourt College Publishers
KW  - Natural resources
KW  - Environment
KW  - Mam made resources
ER  -