Introduction: Scope and Significance of the Study PART I: THE ROLE OF TRADERS IN CLUSTER DEVELOPMENT Overseas Vietnamese Traders in a Garment Cluster in Vietnam Petty Traders in a Garment Cluster in Kenya PART II: THE ROLE OF MANAGERIAL HUMAN CAPITAL IN THE UPGRADING PROCESS The Product Ladder in the Steel-Bar Industry in Vietnam The Move to the Formal Sector in the Metalwork Industry in Kenya PART III: THE CHINA SHOCK AND QUALITY IMPROVEMENT The...