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By: Youngken, Heber W. (Heber Wilkinson), - Stewart, Francis Edward,Edition:Publication info: Philadelphia, P. Blakiston's son & co, [c1914]Volume:Series:Holding Institution: Cornell University LibrarySubjects:BHL Collections:
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By: Youngken, Heber W. (Heber Wilkinson),Edition:Publication info: Philadelphia, P. Blakiston's Son, c1938Volume:Series:Holding Institution: Missouri Botanical Garden, Peter H. Raven LibrarySubjects:BHL Collections: Missouri Botanical Garden's Materia Medica
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By: Youngken, Heber W. (Heber Wilkinson),Edition: 2d ed., rev. and enl., with 195 illustrations.Publication info: Philadelphia, P. Blakiston's Son & Co, [©1918]Volume:Series:Holding Institution: The New York Academy of MedicineSubjects:BHL Collections: Expanding Access to Biodiversity Literature
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By: Youngken, Heber W. (Heber Wilkinson),Edition: 3d ed.Publication info: Philadelphia, P. Blakiston's son & co, [c1920]Volume:Series:Holding Institution: Library of CongressSubjects:BHL Collections:
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By: Youngken, Heber W. (Heber Wilkinson),Edition: Ed. 3, rev.Publication info: Philadelphia, Blakiston, [1921]Volume:Series:Holding Institution: University of Toronto - Gerstein Science Information CentreSubjects:BHL Collections:
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By: Youngken, Heber W. (Heber Wilkinson),Type: ArticleIn: American journal of botanyVolume: 6Series:Issue: 9Date: 1919-11Page Range: 380--386Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-Subjects:
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By: Youngken, Heber W. (Heber Wilkinson),Type: ArticleIn: ArnoldiaVolume: 2Series:Issue: 7Date: 1942Page Range: 37--40Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard UniversitySubjects: