Yazar
a t holman
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Cilt sonuçları
Farm operating efficiency investigations in Virginia 1931-1938
A. T Holman · U.S. Dept. of Agriculture, Bureau of Agricultural Chemistry and Engineering
57 sayfa · 1940
Farms
Fire fighting on farms
A. T. Holman · U.S. Dept. of Agriculture
54 sayfa · 1946
Safety measures / Agriculture / Fire prevention