Part 1 What do we mean by development?: development indicators; economic; social; composite; PQLI index; who's who - the maze of terminology, the 36 LDCs, regional inequalities, case study - Brazil. Part 2 Measuring the population: problems with the census, case study - Peru, demographic transition, population pyramids. Part 3 Migration: types of migration; reasons for migration; effects on the population structure; effects of migration; case studies - rural/urban - Nigeria; refugees; Horn of Africa; spontaneous international; Southern Italy. Part 4 Health and the control of disease: contrasts between the developed and Third Worlds; physical factors affecting disease case study - water; schistosomiasis; malaria; diahorrea; United Nations drinking and sanitation decade; Tamil Nadu; wateraid; primary health care case studies - China; Mozambique; work of WHO; case studies - immunization; smallpox edadication; eradication of malaria; role of women. Part 5 Problems of development: the Rostow model; myrdal's multiplier theory; Frank and Blaut; case study - Brazil; the debt crisis; IMF; world bank; case study - Mexico; problems of development; case study - the volta dam.