2026-08-30T21:13:42Zhttps://etda.libraries.psu.edu/catalog/oaiPenn_State_Universityhttps://etda.libraries.psu.edu/catalog/oai2.0askalibrarian@psu.edu1999-04-07T12:00:00ZtransientYYYY-MM-DDThh:mm:ssZoaietda.libraries.psu.edu:oai:etda.libraries.psu.edu:109660