Suthanma Sombuntham <br/><br/>
An economic evaluation of biogas as energy and fertilizer in rural Northeast Thailand  [microform] / 
by Suthanma Sombuntham 
 - Ann Arbor, Mich. :  University Microfilms International,  1983 
 - 3 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D.)-University of Massachusetts, 1982 
<br/><br/><label>ISBN: </label>Y910041036 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biogas--Economic aspects--Thailand