1995b-344 19thcentury 2007f-861 20thcentury adolescent biography child childbirth childwelfare correspondenceastopic datacollection economics eligibilitydetermination foodassistance greatbritain healtheducation healthpromotion history hq1593 infant infants maternalandinfantwelfare maternalhealthservices maternalwelfare methods motherandchild motherhood mothers nutritionpolicy parturition pregnancy pregnantwomen prenatalcare preventivehealthservices preventivehealthservicesforchildren preventivehealthservicesforteenagers publicassistance publicwelfare specialsupplementalnutritionprogramforwomen statisticsastopic unitedstates wa310aa1 wa310i4332007 wa320b8561994 weightgain