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  1. By: Smith, J. H. (Jay Hamilton), - Allison, Franklin E. (Franklin Elmer), - Mullins, Joseph F., - United States. Department of Agriculture.
    Publication info: Washington, D.C, Agricultural Research Service, U.S. Dept. of Agriculture, 1962
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Carbon  Growth (Plants)  Growth cabinets and rooms  Isotopes  
  2. By: Harper, A. M. (Alexander Maitland), - Roberts, D. W. A. - Canada. Agriculture Canada. Research Branch
    Publication info: Lethbridge, Alta, Research Branch, Agriculture Canada, 1988
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
    Subjects: Growth cabinets and rooms  Phytotron