TY  - BOOK
AU  - Schumachen F X
AU  - Chapman R A
TI  - Sampling methods in forestry and range management
U1  - 000SB:634.9 
PY  - 1942///
CY  - Durham
KW  - Forestry
KW  - Sampling methods
N1  - Duke University, School of forestry, bulletin ; 7
ER  -