On Eating Habits and Nutrition Condition, Quedlinburg, 1985-1989 1st Partial...
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Social influence factors on eating habits of pregnant women. Topics: Ages of mother and father; marital status; person-room index; housing conditions; type of residence;...
影响孕妇饮食习惯的社会影响因素。研究主题包括：父母年龄、婚姻状况、人均房间指数（person-room index）、居住条件、住宅类型……
