Roberts, Ray Carlton <br/><br/>
Soil survey, Puerto Rico ... Department of Agriculture, Bureau of Plant Industry in cooperation with the University of Puerto Rico Agricultural Experiment Station. 

 - Washington  [U.S. Govt. Print. Off.  1942] 
 - 503 p.  illus., charts, maps., and atlas of 6 fold. maps.  23 cm. 
 - United States. Bureau of Plant Industry [Soil survey report] Series 1936, no. 8 .
<br/><br/> Cover title. 
<br/><br/>"Literature cited": p. 492-495. 
<br/><br/><label>LCCN: </label>agr42000238  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil surveys--Puerto Rico.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico
<br/><br/><label>LC Class. No.: </label>S591  / .A22 1936, no.8 
<br/><br/><label>Dewey Class. No.: </label>631.470973 
<br/><br/><label>National Agricultural Library Call No.: </label>1So32  S591.A22 1936, no. 8  / F 1936, no. 8