Laboratory manual for introductory soil science / 
H. D. Foth ... [et al.] 
 - 6th ed. 
 - Dubuque :  Wm. C. Brown Co.,  1982. 
 - vii, 143 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science--Laboratory manuals.