EXCERPTA MEDICA, INTERNATIONAL CONGRESS SERIES nr 518 537,540 Human milk. Its biological and social value. Selected papers from the International Symposium on Breast Feeding, Tel-Aviv, Fevruary 24-28, 1980. Ed. by S. Freier and A. I. Eidelman. Amsterdam 1980 Excerpta Medica 8° s. XI, nlb. 1, 341, il. Excerpta Medica, International Congress ser. nr 518