TY  - BOOK
AU  - Wackerman,Albert Edward
TI  - Harvesting timber crops
T2  - The American forestry series
AV  - SD538 .W3
U1  - 634.982 
PY  - 1949///
CY  - New York
PB  - McGraw-Hill Book Co.
KW  - Lumbering
KW  - United States
KW  - Timber
N1  - "Selected references": p. 431-432
ER  -