Instructional materials for agriculture / 
OMG Booksource Company 
 - Baltimore :  OMG Booksource,  c1980. 
 - 160p. ;  ill. ;  28 cm. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>LC Class. No.: </label>S95  / .S4 1980