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Systematics and the origin of species : on Ernst Mayr's 100th anniversary [E-Book] /
Other Personal Name(s): “...Fitch, Walter M....”

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Variation and evolution in plants and microorganisms : toward a new synthesis 50 years after Stebbins [E-Book] /
Other Personal Name(s): “...Fitch, Walter M....”

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Colloquium on Variation and Evolution in Plants and Microorganisms--Toward a New Synthesis--50 Years After Stebbins [E-Book]/
Other Personal Name(s): “...Fitch, Walter M....”

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Tempo and mode in evolution : genetics and paleontology 50 years after Simpson [E-Book] /
Other Personal Name(s): “...Fitch, Walter M....”

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Multiple Periodic Variable Stars [E-Book] : Proceedings of the International Astronomical Union Colloquium No. 29, Held at Budapest, Hungary 1–5 September 1975 /
Other Personal Name(s): “...Fitch, Walter S....”

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