Productivity of forest ecosystems :  Productivite des ecosystemes forestiers. Proceedings of the Brussels symposium organized by Unesco and the International Biological Programme (27-31 October 1969). / 
edited by P. Duvigneaud. 
 - Paris :  Unesco,  1971. 
 - Ecology and conservation ;  4 .
<br/><br/> English or French, with summaries in the other language.  "SC.70/XXIV.4/AF."  Title and some of text in French. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>LCCN: </label>73160364 //r862 
<br/><br/><label>Nat. Bib. No.: </label>F*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest ecology -- Congresses.--Forest ecology -- Congresses.<br/>Forest productivity -- Congresses.--Forest productivity -- Congresses.
<br/><br/><label>LC Class. No.: </label>QK938.F6  / S93 1969 
<br/><br/><label>Dewey Class. No.: </label>581.5/264