the U.S. National Plant Germplasm System 

 - Washington  Nat.Ac.Press  1991 
 - xiv, 171 s. : ill. 
<br/><br/><label>Subjects--Index Terms: </label>DOCUMENTATION GENE BANKS GENETIC RESOURCES INFORMATION PROCESSING NPGS 
<br/><br/><label>Dewey Class. No.: </label>333.953416