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Commercial Fertilizers in 1929-30 and Their Uses.
(Texas Agricultural Experiment Station, 1930)
Commercial Fertilizers in 1933-34.
(Texas Agricultural Experiment Station, 1934)
Commercial Fertilizers in 1931-32 and Their Uses.
(Texas Agricultural Experiment Station, 1932)
Commercial Fertilizers in 1930-31.
(Texas Agricultural Experiment Station, 1931)