Paiboon Prabuddham,  1939- <br/><br/>
The composition levels of selected trace elements in soils from the major rice producing regions of Thailand and South Vietnam and some factors related to the abundance of these elements  [microform] / / 
by Paiboon Prabuddham 
 - Ann Arbor, Mich. :  University Microfilms International,  1975 
 - 1 microfilm reel :  positive ;  35 mm. 
<br/><br/> Thesis (Ph.D.) - University of Illinois at Urbana - Champaign, 1975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil--Trace elements content<br/>Rice--Soils