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  1. By: Spencer, Guilford L. (Guilford Lawson), - Ewell, Ervin Edgar, - United States. Division of Chemistry.
    Publication info: Washington, D.C, G.P.O, 1892
    Holding Institution: Multiple institutions
  2. By: Wiley, Harvey Washington, - United States. Division of Chemistry. - United States. Department of Agriculture.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, Division of Chemistry, 1896
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library