Biodiversity Heritage Library
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By "Delaware County Institute of Science (Delaware County, Pa.) "
History of Delaware County, Pennsylvania : from the discovery of the territory included within its limit to the present time, with a notice of the geology of the county, and catalogues of its minerals, plants, quadrupeds, and birds, written under the direction and appointment of the Delaware County Institute of Science /
By: Smith, George, - Delaware County Institute of Science (Delaware County, Pa.)
Publication info: Philadelphia :Printed by Henry B. Ashmead,1862.
Contributed by: University of Pittsburgh Library System (archive.org)
Proceedings of the Delaware County Institute of Science.
By: Delaware County Institute of Science (Delaware County, Pa.)
Publication info: Media, Pa. :The Institute,1906-
Contributed by: Mertz Library, The New York Botanical Garden
BHL Collections: New York Botanical Garden