Fertilizer summary data.

Description

Viewability

Item Link Original Source
Full view   1968 University of Michigan
Full view   1970 University of Michigan
Full view   1970-78 University of California
Full view   1972 1972 The Ohio State University
Full view   1974 1974 The Ohio State University
Full view   1976 1976 The Ohio State University
Full view   1978 1978 The Ohio State University
Full view   1980-86 University of California
Full view   1980 1980 The Ohio State University
Full view   1982 University of Michigan