dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Downs, Robert Jack, - Borthwick, H. A. (Harry Alfred), - Piringer, A. A. (Albert A.),
    Edition: Rev. Mar. 1966.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, Agricultural Research Service, 1966
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Downs, Robert Jack, - Borthwick, H. A. (Harry Alfred), - Piringer, A. A. (Albert A.), - United States. Agricultural Research Service. Crops Research Division.
    Publication info: [Beltsville, Md.], U.S. Dept. of Agriculture, Agricultural Research Service, 1961
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library