- 
              
            921
- 
              
            922Policy relevance of findings of the World Fertility Survey for developing countries.Publicado 1986Libro
- 
              
            923The methodology of measuring the impact of family planning programmes on fertility.Publicado 1986Libro
- 
              
            924
- 
              
            925
- 
              
            926
- 
              
            927
- 
              
            928
- 
              
            929
- 
              
            930


