000			00756nam a2200181Ia 4500
008			130910s9999 xx 000 0 und d
041			_aeng
082			_221st ed. _a634.91473 _bBRU/P
110			_aBrussels Symposium on Productivity of Forest Ecosystems : _c(Brussels : _d27-31 October, 1969)
245			_aProductivity of forest ecosystems : _bproceedings of the Brussels Symposium held at Brussels from 27-31 October, 1969 _cedited by P. Duvigneaud
260			_aParis : _bUnited Nations Educational, Scientific and Cultural Organisation , _c1971
300			_a707.: ill ; _c26.5cm
653			_aForest management-Congresses
653			_aForest productivity-Congresses
653			_aForest soils-Congresses
700			_aDuvigneaud, P., ed.
942			_cEN _2ddc
999			_c13017 _d13017