Laboratory manual for introductory soil science / 
H. D. Foth ... [et al.] 
 - 4th ed. 
 - Dubuque :  Wm.C.Brown Company,  1976. 
 - vii, 115 leaves. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science--Laboratory manuals.