A system for visually classifying alfalfa flower color
By: by D.K. Barnes
Contributors: United States. Agricultural Research Service
Series: Agriculture handbook / United States Department of Agriculture -- no. 424; Agriculture handbook (United States. Department of Agriculture) -- no. 424.
Publisher: Agricultural Research Service, U.S. Dept. of Agriculture
Published: 1972
Place of publication: Washington, D.C.]
Language: eng
Number of pages: 12
Subjects: Alfalfa; Classification
Notes: "Issued May 1972."

Includes bibliographical references (p. 11-12).