More about David L. Armstrong:
| | Books by David L. Armstrong: Books in the extended shelves: Armstrong, David L.: Costs, performance rates, and combinations, Southern San Joaquin Valley California (The Foundation :, 1964), also by J. Edwin Faris, University of California (System). Division of Agricultural Sciences, Giannini Foundation of Agricultural Economics, and California Agricultural Experiment Station (page images at HathiTrust) Armstrong, David L.: Economies associated with size : Kern County cash-crop farms (California Agricultural Experiment Station, Giannini Foundation of Agricultural Economics, 1963), also by J. Edwin Faris, Giannini Foundation of Agricultural Economics, and California Agricultural Experiment Station (page images at HathiTrust) Armstrong, David L.: Employment agreements in hiring farm workers (Rural Manpower Center, 1969) (page images at HathiTrust) Armstrong, David L.: Profitability of practices affecting the calf crop of beef herds (Ohio Agricultural Experiment Station, 1961), also by Edgar T. Shaudys (page images at HathiTrust)
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