TY  - GEN
AU  - Duerr, William  A. 
TI  - Introduction to forest resource economics 
SN  - 0070179824
U1  - 634.9 
PY  - 1993///
CY  - New york
PB  - McGraw-Hill Book Company
KW  - Forestry
KW  - Orchard, fruits, forestry
ER  -