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Douglas Houghton Campbell Orden de los libros

    19 de diciembre de 1859 – 24 de febrero de 1953
    Plant Life and Evolution
    A University Text-Book of Botany
    The Development Of The Ostrich Fern, Onoclea Struthiopteris
    Vegetation Of Australia And New Zealand
    Studies On The Ophioglossaceae
    Elements of Structural and Systematic Botany, for High Schools and Elementary College Courses