004300000a22001450004500003000900000005001700009110003100026245010700057264004900164300001000213041000800223650001100231650002700242650001500269PH-MaWHO20241108112105.0 aWorld Health Organization. aHealth and the family : studies on the demography of family life cycles and their health implications. aGeneva : bWorld Health Organization,c1978. a153p. aeng aFamily aFamily characteristics aDemography