TY  - BOOK
AU  - Assmann,Ernst
TI  - The principles of forest yield study: studies in the organic production, structure, increment, and yield of forest stands 
SN  - 0080066585
PY  - 1970///
CY  - Oxford
PB  - Pergamon Press
KW  - Forests and forestry
N1  - Translation of Waldertragskunde
ER  -