Land judging and plant nutrition
Subtitle: a programmed instruction unit.
Contributors: Washington State University. College of Education.
Publisher: Washington State University, Department of Education
Published: 1966
Place of publication: Pullman
Language: eng
Number of pages: 72
Subjects: Soils -- Classification -- Programmed instruction; Plants -- Nutrition -- Programmed instruction
Genres: Programmed instruction.
Notes: Project no. ERD-257-65 [final report]

Contract no. OE-5-85-109: Report no. 13.

Research pursuant to contract with U.S. Office of Education.