TY - BOOK AU - David,Paul A. AU - Hall,Bronwyn H. AU - Toole,Andrew A. TI - Is public R&D a complement or substitute for private R&D? A review of the econometric evidence AV - T175 D384I PY - 1999/// CY - Cambridge, Mass PB - National Bureau of Economic Research KW - RESEARCH AND DEVELOPMENT CONTRACTS KW - RESEARCH AND DEVELOPMENT CONTRACTS, GOVERNMENT KW - RESEARCH, INDUSTRIAL KW - FINANCE ER -