1. Amoroso, E. C., Goffin, A., Halley, G., Matthews, L. H. and Matthews, D. J. (1951). Lactation in the grey seal, J. Physiol., Lond., 113, 4P–5 P
2. Amoroso, E. C. and Matthews, J. H. (1951). The growth of the grey seal (Halichoerus grypus) from birth to weaning, J. Anat., 85, 427–8
3. Angulis y Gonzáles, A. W. (1932). The prenatal growth of the albino rat, Anat. Rec., 52, 117–38
4. Antonov, A. N. (1947). Children born during the siege of Leningrad in 1942, J. Pediat., 30, 250–9
5. Atkinson, P. J. and West, R. R. (1970). Loss of skeletal calcium in lactating women, J. Obstet. Gynaec. Br. Common w., 77, 555–60