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Scott, Donald Hyde Digital Repository at the University of Maryland University of Maryland (College Park, Md) 2016-04-21T16:45:31Z 2016-04-21T16:45:31Z 1949 https://doi.org/10.13016/M2Z15K http://hdl.handle.net/1903/17535 English Cellular biology Genetics Cytological studies on polyploids derive Dissertation open.access