Ministry of Agriculture standard for grades of yellow yam 
Ministry of Agriculture 
 - [Kingston]  [JIS Press]  [58A Half Way Tree Rd, Kgn. 10]  1985 
 - [4] pages  22 cm 
<br/><br/> Cover title 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Yams--Grading--Jamaica