Seed :  the yearbook of agriculture 1961. 

 - Washington :  Department of Agriculture,  1961. 
 - 87th Congress, its Session, House document / Department of Agriculture ;  no. 29 .
<br/><br/>Incluye glosario. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Certificación de semillas<br/>Semillas
<br/><br/><label>Index Terms--Genre/Form: </label><br/>anuario