O'Neal, A. M.  1881- <br/><br/>
Your soil, crumbly or cloddy? 
[By  A.M. O'Neal and A. . Klingebiel. 
 - Washington,  U.S. Govt. Print. Off.,  1952]. 
 - 8 p.  illus.  26 cm. 
 - (U.S. Dept. of Agriculture.  Leaflet no. 328.) .
<br/><br/><label>LCCN: </label>agr52000537  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Aggregation.<br/>Soil physics.
<br/><br/><label>LC Class. No.: </label>S21  / .A483 no. 328