Media type: E-Article Title: How to Improve Pennsylvania's Tax System Contributor: Yakovlev, Pavel A. Published: Elsevier BV, 2017 Published in: SSRN Electronic Journal (2017) Language: English DOI: 10.2139/ssrn.3169518 ISSN: 1556-5068 Keywords: Pharmacology (medical) Origination: Footnote: