. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. TlMe IN DAY5 ti-Mfflt iffil. I r i I T»r-i£ IN t>AY5. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Pennsylvania. Botanical Laboratory; University of Pennsylvania. Morris Arboretum. Philadelphia : [s. n. ]

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Keywords: ., bookcentury1900, bookpublisherphiladelphiasn, booksubjectbotany