Palmer, Robert G. <br/><br/>
Introductory soil science laboratory manual / 
Robert G. Palmer, Frederick R. Troeh. 
 - 2nd ed. 
 - Ames :  Iowa State University Press,  1977. 
 - vii, 136 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science--Laboratory manuals.