TY  - BOOK
AU  - Wardle P A Ed.
TI  - Operational Research and the managerial economics of forestry
U1  - X9(JB):8:(B2893).3.N7, L1/GD 
PY  - 1971///
CY  - London
PB  - Her Majesty' Stationery Office UK      
KW  - Forestry Industry
ER  -