Donahue, Roy L. <br/><br/>
Laboratory manual for introductory soils / 
Roy L. Donahue. 
 - 1st ed. 
 - Illinois :  The Interstate printers and  Publishers,  1952. 
 - 133 p. :  ill. ;  28 cm. 
<br/><br/> Open access. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science--Laboratory manuals.