The General Practitioner Obstetrician

Ardrey R . (1963) African Genesis. New York.

Arthurton M W Bamford F N . (1967) Brit. med. J. ii, 517.

Butler N R Bonham D G . (1963) Perinatal Mortality. Edinburgh and London.

Craig G A Muirhead J M B . (1967) Brit. med. J. ii, 520.

Duncan A S . (1965) Med. Wld (Lond.) 103, 251.

Ministry of Health (1959) Maternity Services Committee Report. London.

Sluglett J Walker S . (1956) Lancet i, 684.

Walker A L Wrigley A J Organe G S W Chamberlain R N Martin W J . (1963) Rep. publ. Hlth med. Subj. (Lond.) No. 108.