Flora of Pennsylvania Porter, Thomas C. (Thomas Conrad), 1822-1901 creator Small, John Kunkel, 1869-1938 contributor text book Boston Ginn & Company 1903 1903
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ENG Botany Pennsylvania Plants QK183 .P84 https://www.biodiversitylibrary.org/bibliography/56697 4129921 03029862 10.5962/bhl.title.56697 DLC