This set of tables and graphs contains 4 parts: 1) A graphic presentation of age-specific fertility rates available in the 1960s and the most recent date for all countries and territories of the world having at least 20 thousand inhabitants in 1975. Empirical data assembled since 1960 from complete vital registration systems, censuses, or surveys was found for 143 (74%) of the 192 countries included. Estimates of population size and crude birth rate for 1975 are given for the 49 countries, mainly in Africa and Asia, with grossly inadequate or nonexistent data on age-specific fertility rates. 2) A table containing fertility statistics used in the chart for indicated years and total fertility rates along with data codes for the countries of the world indicating whether the data were provided by birth registration, census, or survey. 3) A listing of sources from which fertility statistics were obtained or derived for each country. 4) A table presenting the estimated population, crude birth and death rates, and rate of natural increase for every country and region of the world in 1975. Despite variations in quality of statistics, the data indicate a substantial global trend toward lower fertility, particularly in countries where organized efforts were made to lower fertility. Total fertility rates fell below replacement level in at least 13 developed countries in the early 1970s.