Heckman, Charles W. <br/><br/>
Rice field ecology in Northeastern Thailand  the effect of wet and dry seasons on a cultivated aquatic ecosystem 
Charles W. Heckman 
 - The Hague  W. Junk  1979 
 - vi, 228 p.  ill 
 - Monographiae biologicae  v.34 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rice--Thailand--Udorn Thani<br/>Rice--Case studies--Thailand<br/>Wetland ecology--Case studies--Thailand<br/>Wetland ecology--Thailand--Udorn Thani