Sombrock, W.G. <br/><br/>
Amazon soils. A reconnaissance of the soils of the Brazilian Amazon region [Solo; Amazonas; Brasil] 

 - Wageningen (Netherlands):   1966.  
 - 292 p. 
<br/><br/> Summaries (Eng, Por); Bibliography p. 267-273 (141 ref.); Agricultural Research Reports, 672 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PEDOLOGIA<br/>REGIAO AMAZONICA