Boccheciamp, Rafael A. <br/><br/>
Soil survey of the Humacao area of eastern Puerto Rico 
by Rafael A. Boccheciamp. 
 - [Washington]  Soil Conservation Service  [1977] 
 - iii, 103 p.  illus., maps. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil surveys--Maps.--Puerto Rico--Humacao
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Soil.