Biological and sociological basis for a relational use of forest resources for energy and organics: proceedings of an international workshop held at Michigan state university, 1979. 

 - Washington-US :   United States Agency for International Development,   1981. 
 - página 39 :   ilustraciones blanco y negro 
 - Trimestral 
 - Vol.9, no.2 (Jul. 1981) 
 - A.I.D. research & development abstracts ;   no.2 .
 - United States Agency for International Development. .
<br/><br/> Artículo dentro de: Environment & natural resources-forest resources reports.  Sumarios de investigación.