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  1. Archives néerlandaises des sciences exactes et naturelles, publiées par la Société hollandaise des sciences à Harlem.
    By: Baumhauer, E. H. von - Bosscha, J. - Lotsy, Johannes Paulus, - Hollandsche Maatschappij der Wetenschappen.
    Publication info: La Haye :Société hollandaise des sciences à Harlem,1866-1911.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
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  2. Evolution by means of hybridization / by J. P. Lotsy.
    By: Lotsy, Johannes Paulus,
    Publication info: The Hague :M. Nijhoff,1916.
    Contributed by: Gerstein - University of Toronto (archive.org)
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  3. Evolution by means of hybridization,
    By: Lotsy, Johannes Paulus,
    Publication info: The Hague,M. Nijhoff,1916.
    Contributed by: Cornell University Library
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  4. Evolution by means of hybridization, by J. P. Lotsy.
    By: Lotsy, Johannes Paulus,
    Publication info: The Hague :M. Nijhoff,1916.
    Contributed by: University of California Libraries (archive.org)
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  5. Evolution by means of hybridization, by J. P. Lotsy.
    By: Lotsy, Johannes Paulus,
    Publication info: The Hague,M. Nijhoff,1916.
    Contributed by: MBLWHOI Library, Woods Hole
    BHL Collections: MBLWHOI Library, Woods Hole
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