Sources of resistance in alfalfa to Lygus hesperus Knight
By: by M. W. Nielson, Harold Don, and Jerry Zaugg.
Contributors: Don, Harold.; Zaugg, Jerry.; United States. Agricultural Research Service. Western Region
Series: ARS-W -- 21
Publisher: U.S. Dept. of Agriculture, Agricultural Research Service
Published: 1974
Place of publication: [Washington]
Language: eng
Subjects: Alfalfa -- Disease and pest resistance.
Notes: Caption title.

"August 1974."

Bibliography: p. 4-5.