Challenging patterns
By: Dorothy A. Ettl, Diane S. Triplett.
Series: Extension mimeo -- 4582.; Extension mimeo (Washington State University. Cooperative Extension) -- 4582.
Publisher: Cooperative Extension, College of Agriculture, Washington State University
Published: 1980
Place of publication: Pullman, Wash
Language: eng
Notes: Caption title.

"Published September 1980"--P. [8].

"EM 4582"--Cover.