Athreya, B.H. , Coriell, L.L. and Charney, J.: Poliomyelitis antibodies in human colostrum and milk. J. Pediat.64: 79, 1964.
2.
Bain, K.: The incidence of breast feeding in hospitals in the United States. Pediatrics2: 313, 1948.
3.
Guthrie, H.A. : Infant feeding practices in the Philippines. J. Trop. Geog. Med.14: 164, 1962.
4.
Gyorgy, P.: A hitherto unrecognized biochemical difference between human milk and cow's milk. Pediatrics11: 98, 1954.
5.
Harlow, H.F. : The heterosexual affectional systems in monkeys . Amer. Psychol.17: 1, 1962.
6.
Heiner, D.C. , Wilson, J.F. and Lahey, M.E.: Sensitivity to cow's milk. J.A.M.A.189: 563, 1964.
7.
Jackson, E.B. , Wilkins, L.C. and Auerbach, H.: Statistical report on the incidence and duration of breast feeding in relation to personal, social and hospital maternity factors . Pediatrics17: 700, 1956.
8.
Meyer, H.F.: Breast feeding in the United States. Extent and possible trend. Pediatrics22: 116, 1958.
9.
Newson, J.L. and Newson, E.: Breast feeding in decline. Brit. Med. J. No. 2, 1744, 1962.
10.
Robertson, W.O.: Breast feeding practices: some implications of regional variations. Amer. J. Pub. Health51: 1035, 1961.
11.
Salber, E.J. , Stitt, P.G. and Babbott, J.G.: Patterns of breast feeding. 1. Factors affecting the frequency of breast feeding in the newborn period. New Eng. J. Med.259: 707, 1958.
12.
Sluckin, W.: Imprinting and Early Learning. Chicago, III., Aldine, 1965.
