Duvigneaud P Ed. <br/><br/>
Proceeding on productivity of forest ecosystems 

 - Paris           Unesco  1971 
 - 707p.  cm. 
 - Ecology and conservation; 4 .
<br/><br/><label>Standard No.: </label>54366 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Forestry<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>JB:95p1,N69, L1