Permitting free entry of articles imported from foreign countries for the purpose of exhibition at the First International Instrument Congress and Exposition, Philadelphia, Pa [electronic resource].
Record is based on bibliographic data in ProQuest U.S. Serial Set Digital Collection (last viewed Apr. 2008). Reuse except for individual research requires license from ProQuest, LLC. AVAILABLE ONLINE TO AUTHORIZED PSU USERS.
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Electronic resource. [Bethesda, Md.]: ProQuest, 2004. (ProQuest U.S. Serial Set Digital Collection : no. 11730 S.rp.1701).