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A Unified Approach to Determinants of R&D Expenditures and Technical Change with Evidence from U.S. Manufacturing Industries

Azhar, Rauf AhmedDavid ButterfieldWilfrid Laurier University. Dept. of EconomicsWilfrid Laurier University. School of Business and Economics

出版	School of Business and Economics, Wilfrid Laurier University, 1984
URL	http://books.google.com.hk/books?id=zU8-NAEACAAJ&hl=&source=gbs_api