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Frank Burdette Headley
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The work of the San Antonio Experiment Farm in 1907
Frank Burdette Headley · U.S. Dept. of Agriculture, Bureau of Plant Industry
16 sayfa · 1908
Agricultural experiment stations
The work of the San Antonio Experiment Farm in 1908
Frank Burdette Headley · U.S. Dept. of Agriculture, Bureau of Plant Industry
17 sayfa · 1909
Agricultural experiment stations