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  1. 1
    出版 1951
    Washington : Photographed by General Services Administration, Region 3, Records Management Service, 1951.
    106 microfilm reels ; 16 mm.
  2. 2
    出版 1939
    College Station, Tex. : Extension Service of the Agricultural and Mechanical College of Texas, [1939-
    v. : ill. ; 27 cm.
  3. 3
    出版 1930
    College Station, Tex. : Extension Service, Agricultural and Mechanical College of Texas, 1930-1940.
    11 v. : ill., maps ; 22 cm.

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