[Socio-spatial heterogeneity and differential fertility in Bolivia. Pt. 2 (author's transl)]

In this research, based on the 1976 census, the population is simultaneously disaggregated in 3 regions, 5 urbanization levels, and 5 social sectors. This 2nd part discusses the role of intermediate variables both through the differential analysis of marital fertility and a simulation exercise with the Bongaarts model. An analysis is also made of the trends of general fertility between 1963-1972, estimated through the "own children method." The findings show that the stability of fertility in the country would be the consequence of the fertility rise in the rural areas and its decrease in the urban areas, particularly in the intermediate strata. There is indirect evidence that this decrease would mainly be the result of the growing practice of birth control. The effect of education on fertility would be strongly conditioned by the urbanization level. The higher fertility in the region of "los Llanos" would be the consequence of a higher nuptiality conditioned by the sex composition of internal migrations.