Using firm level panel data from the U.S., I explore the relationship between firm size and R&D productivity for two important and R&D-intensive industries: Semiconductors and Pharmaceuticals. I employ two measures of a firm's R&D performance: the number of citations received per patented...

Front matter -- Preface and Acknowledgments -- Contents -- Introduction -- 1 Personal Computing -- 2 Software -- 3 Semiconductors -- 4 Flat Panel Displays -- 5 Lighting -- 6 Pharmaceuticals -- 7 Biotechnology -- 8 Logistics -- 9 Venture Capital -- 10 Financial Services.