Human population problems in the biosphere :  some research strategies and designs / 
by Paul Baker ... [et al.]. 
 - París :  UNESCO,  1977. 
 - 82 p. :  il., map. 
 - MAB technical notes ;  3 .
<br/><br/><label>ISBN: </label>923101482. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>572.001. 5 (100) =20HUM No.3.