(1984). R & D, patents, and productivity. Univ. of Chicago Pr.
Chicago Style (17th ed.) CitationR & D, Patents, and Productivity. Chicago [u.a.]: Univ. of Chicago Pr, 1984.
MLA (9th ed.) CitationR & D, Patents, and Productivity. Univ. of Chicago Pr, 1984.
Warning: These citations may not always be 100% accurate.