TY  - BOOK
AU  - H. W. Zöttle and R. F. Hüttl.
AU  - Zöttl,H.W.
AU  - Hüttl,R.F.
ED  - International Union of Forestry Research Organizations.
TI  - Management of nutrition in forests under stress: proceedings of the international symposium ... Freiburg, Germany ... 1989 ... 
SN  - 0792312465
U1  - 631 
PY  - 1991///
CY  - Dordrecht
PB  - Kluwer Academic
N1  - Sponsored by the International Union of Forest Research Organization, Division 1
ER  -