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  1. By: Henricksen, H. C.
    Publication info: Porto Rico Agricultural Experiment Station, 1930
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    BHL Collections: Expanding Access to Biodiversity Literature
  2. By: Henricksen, H. C.
    Publication info: Washington, D.C, G.P.O, 1904
    Holding Institution: Library of Congress
    BHL Collections: Publicaciones en Español