TY  - BOOK
AU  - Helms, John. A.
AU  - Baker, Frederick. S.
AU  - Daniel, Theodre. W.
TI  - Principles of silviculture
U1  - 634.95/DAN 
PY  - 1979///
CY  - New york
PB  - McGraw- Hill Book Company
KW  - BOTANY
ER  -