TY  - BOOK
AU  - Duvigneaud, P., ed.
ED  - Brussels Symposium on Productivity of Forest Ecosystems :
TI  - Productivity of forest ecosystems: proceedings of the Brussels Symposium held at Brussels from 27-31 October, 1969
U1  - 634.91473 21st ed.
PY  - 1971///
CY  - Paris
PB  - United Nations Educational, Scientific and Cultural Organisation
KW  - Forest management-Congresses
KW  - Forest productivity-Congresses
KW  - Forest soils-Congresses
ER  -