Boyland, Patricia Barrett <br/><br/>
The Effects of tractorization in rice culture in the Philippines  [microform] / 
Patricia Barrett Boyland 
 - Ann Arbor, Mich. :  University Microfilms International ,  1990 
 - 2 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D.) - University of California, Davis, 1989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rice--Philippines