R & D and Productivity in German Manufacturing Firms
ZEW Discussion Paper No. 94-01 // 1994Harhoff, Dietmar (1994), R & D and Productivity in German Manufacturing Firms, ZEW Discussion Paper No. 94-01, Mannheim.
Harhoff, Dietmar (1994), R & D and Productivity in German Manufacturing Firms, ZEW Discussion Paper No. 94-01, Mannheim.