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  1. By: Koninklijke Nederlandse Botanische Vereniging.
    Publication info: Leyden, S. en J. Luchtmans, 1846-1951
    Holding Institution: Multiple institutions
  2. By: Koninklijke Nederlandse Botanische Vereniging.
    Publication info: Nimègue, Société botanique néerlandaise, 1904-1950
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library