The three papers in this collection discuss, respectively, the relationship of breastfeeding to human fertility, strategies to improve feeding of infants and young children, and infant feeding options for Thai professional women residing in Bangkok. Specific topics addressed in the first paper include the physiological role of lactation on fertility, and lactation in relationship to amenorrhea, anovulation, and pregnancy. The second paper focuses on problems of malnutrition in Third World countries and discusses the advantages of breastfeeding, the economics of breastfeeding at the national and individual level, ways infant formula is typically promoted, and strategies for controlling the promotion of infant formula. These strategies include legislative and educational plans as well as interventions based on Paulo Freire's method. The third paper reports findings of a small-scale preparatory survey examining one aspect of the process of modernization in Thailand: the increasing use among professional women in Bankok of bottle feeding with infant formula. Data reported were gathered on a questionnaire concerning childbirth and infant feeding practices that was distributed to civil servants and to a network of colleagues and former students from Thammasat University. Infant feeding preferences and factors influencing the choice of infant feeding methods--including family structure, breastfeeding problems, medical facilities, promotion of infant formula, employment, and bottles as status symbols--are discussed. (RH)