SMOKING IN PREGNANCY AND VITAMIN-B12 METABOLISM

[21] SMITH ADM, 1961, LANCET, V1, P1001

[22] STOA KF, 1957, ARBOK U BERGEN, V2, P1

[23] SURE BARNETT, 1951, JOUR AMER DIETETIC ASSOC, V27, P564

[24] SWINYARD EA, 1970, PHARMACOL BASIS THER, P930

[25] TEMPERLEY I. J., 1968, J OBSTET GYNAECOL BRIT COMMONW, V75, P511

[26] VOLLE RL, 1970, PHARMACOL BASIS, P585

[27] Whiteside M G, 1968, Med J Aust, V1, P338

[28] WILSON J, 1968, LANCET, V1, P1157

[29] WILSON J, 1966, CLIN SCI, V31, P1

[30] WILSON J, 1971, LANCET, V1, P259

[21] SMITH ADM, 1961, LANCET, V1, P1001

[22] STOA KF, 1957, ARBOK U BERGEN, V2, P1

[23] SURE BARNETT, 1951, JOUR AMER DIETETIC ASSOC, V27, P564

[24] SWINYARD EA, 1970, PHARMACOL BASIS THER, P930

[25] TEMPERLEY I. J., 1968, J OBSTET GYNAECOL BRIT COMMONW, V75, P511

[26] VOLLE RL, 1970, PHARMACOL BASIS, P585

[27] Whiteside M G, 1968, Med J Aust, V1, P338

[28] WILSON J, 1968, LANCET, V1, P1157

[29] WILSON J, 1966, CLIN SCI, V31, P1

[30] WILSON J, 1971, LANCET, V1, P259