Problems of humid tropical regions 
/ UNESCO 
 - Paris:   UNESCO,   1958 
 - 102p.  
 - Humid tropics research .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Tropical regions  
<br/><br/><label>Universal Decimal Class. No.: </label>57/59:91(213)  / J8