Oltman, Roy E.  1911- <br/><br/>
Reconnaissance investigations of the discharge and water quality of the Amazon River, 
by Roy E. Oltman. 
 - Washington,  1968. 
 - iii, 16 p.  illus., maps.  26 cm. 
 - United States. Geological Survey. Circular  552 .
 - Geological Survey circular ;  552. .
<br/><br/> Prepared in cooperation with the Ministerio da Marinha do Brazil [and the] University of Brazil. 
<br/><br/>Bibliography: p. 16. 
<br/><br/><label>LCCN: </label>gs 68000221  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stream measurements--Amazon River.<br/>Water quality--Amazon River.
<br/><br/><label>LC Class. No.: </label>QE75  / .C5 no. 552 
<br/><br/><label>Dewey Class. No.: </label>553/.78/09811