Yazar
francis l gerdes
12 cilt bulundu.
Francis L. Gerdes · U.S. Dept. of Agriculture
Sayfa sayısı yok · 1939
Cotton / Drying / Handling / Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture, Agricultural Marketing Service and Bureau of Agricultural Chemistry and Engineering
21 sayfa · 1941
Cotton / Drying / Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture, Bureau of Agricultural Chemistry and Engineering
Sayfa sayısı yok · 1941
Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture
Sayfa sayısı yok · 1938
Cotton machinery / Maintenance and repair / Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture, Bureau of Agricultural Chemistry and Engineering
Sayfa sayısı yok · 1941
Cotton gins and ginning / Cotton / Quality
Francis L. Gerdes · U.S. Dept. of Agriculture, Bureau of Agricultural Chemistry and Engineering, Dc 1941.
Sayfa sayısı yok · 1941
Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture, Bureau of Agricultural Chemistry and Engineering
Sayfa sayısı yok · 1941
Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture
Sayfa sayısı yok · 1941
Cotton picking / Cotton / Handling / Storage / Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture, Bureau of Agricultural Chemistry and Engineering
Sayfa sayısı yok · 1942
Cotton gins and ginning
Francis L. Gerdes · U.S. Dept. of Agriculture
64 sayfa · 1939
Cleaning / Cotton gins and ginning / Cotton
Francis L. Gerdes · U.S. Dept. of Agriculture
62 sayfa · 1936
Cotton growing / Cotton manufacture / Cotton
Charles A. Bennett, Francis L. Gerdes · U.S. Dept. of Agriculture
46 sayfa · 1935
Cotton gins and ginning