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- [34] THE STRUCTURE OF CANADIAN INTER-INDUSTRY R-AND-D SPILLOVERS, AND THE RATES OF RETURN TO R-AND-D JOURNAL OF INDUSTRIAL ECONOMICS, 1989, 37 (03): : 315 - 328
- [35] R-AND-D WILL GROW WITH GRADUATED CAPITAL GAINS TAX RESEARCH & DEVELOPMENT, 1987, 29 (12): : 108 - 108