Chemical properties of soils :  slide-tape instructional unit SR-3 

 - Manila :  The International Rice Research Institute,  [Date of publication not identified] 
 - 78 pages :  illustrations ;  22 cm 
 - Rice production training series .
 - Rice production training series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil chemistry
<br/><br/><label>LC Class. No.: </label>S592.5 C44