Wyrley-Birch, E. A. <br/><br/>
Cocoa and soils in the State of Sabah, Malaysia / 
by E. A.Wyrley-Birch and Shao Yen-Tze 
 - [s.l.] :  Department of Agriculture, Sabah,  1971 
 - 21 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cocoa--Sabah<br/>Soils--Sabah