TY  - BOOK
AU  - Pritchard,M A  .
TI  - A systems approach to forest operations planning and control / 
SN  - 0117102725
U1  - 634.9 
PY  - 1989///
CY  - London : 
PB  - Her Majesty`s Stationery Office , 
KW  - FORESTRY
N1  - NULL
ER  -