1. Mental ability and school achievement of premature children;Douglas, J.W.B.;Brit. med. J; years of age,1956
2. The age at which premature children walk;Douglas, J.W.B.;Med. Offr,1956
3. 'Premature' children at primary schools;Douglas, J.W.B.;Brit. med. J,1960
4. A longitudinal study of the growth and development of prematurely and maturely born children. Part 1: Introduction;Drillien, C.M.;Arch. Dis. Childh,1958
5. A longitudinal study of the growth and development of prematurely and maturely born children. Part III: Mental development;Drillien, C.M.;Ibid,1959