Media type: E-Article Title: A Cytological and a Genetical Study of Petunia. II. Notes on Certain Phases of Sterility Contributor: Brooks, Betty Watt; Walsh, Lydia B.; Ferguson, Margaret C. imprint: University of Chicago Press, 1930 Published in: The American Naturalist Language: English DOI: 10.1086/280300 ISSN: 0003-0147; 1537-5323 Keywords: Ecology, Evolution, Behavior and Systematics Origination: Footnote: Access State: Open Access