Introduction. Economics meets sociology in strategic management (F. Dobbin, J.A.C. Baum). An Embarrassment of Riches. Towards an economic theory of the multiproduct firm (D.J. Teece). The spread of the multidivisional form among large firms, 1919-1979 (N. Fligstein). Economic and sociological perspectives on diversification and organizational structure (D.J. Teece). Alternative approaches to firm strategic behavior (N. Fligstein). Differentiation in business organizations (J. Freeman). The facts, Neil said, nothing but the facts - whose facts? answered David (B. Kogut). Common ground, different assumptions (D.J. Teece). All Happy Firms are the Same. The dominant logic: a new linkage between diversity and performance (C.K. Prahalad, R.A. Bettis). The iron cage revisited: institutional isomorphism and collective rationality in organizational fields (P.J. DiMaggio, W.W. Powell). The iron cage is emptying, the dominant logic no longer dominates (R.A. Bettis). The sources of managerial logics (W.W. Powell). The structuration and destructuration of organizations and organizational fields (W.R. Scott). Where All the Firms are Above Average. Firm resources and sustained competitive advantage (J.B. Barney). Social structure and organizations (A.L. Stinchcombe). Context is crucial: commonalities, differences and subtle differences (J.B. Barney). On equilibrium, organizational form, and competitive strategy (A.L. Stinchcombe). "Luck," "leadership" and "strategy" (R.L. Henderson). Cause for optimism (C. Oliver). Finding Your Niche. Intraindustry structure and the ease of strategic change (S.M. Oster). Is there a future in diversity? The view from economics and sociology (S.M. Oster). Does the early bird get the worm? (H.C. White). The disciplinary divide has been bridged (S.M. Oster). Epilogue. Doing interdisciplinary research in strategic management - without a paradigm war (J.A.C. Baum, F. Dobbin).