TY  - BOOK
AU  - Perman, Roger
AU  - Perman, Roger Mcgilvray, James.Common
TI  - Natural resource and environmental economics
SN  - 9780273655596
AV  - 333.7 PER 2003 
U1  - 333.7 PER 2003 
PY  - 2003///
CY  - New York
PB  - Pearson
KW  - Civil Engineering
ER  -