Part one of World Economic Survey 1967 examines the principal features of economic progress of developing countries during the period 1955 to 1965. As part of the preparatory work for a second United Nations Development Decade, this review seeks to draw pertinent lessons from the recent experience relating to problems and policies of economic development. Chapter 1. The dimensions of recent economic growth -- Chapter 2. Production and productivity : policy problems -- Chapter 3. The mobilization of human and financial resources -- Chapter 4. Development planning : functions and limitations -- Chapter 5. The international environment for economic development.