The Lancet · 1983 · 12 citations · 4 references
4
Second survey Of secular trends in twinning rates
William H. James · Journal of Biosocial Science · 1982 · 59 citations
Secular changes in twinning rates in England and Wales
William H. James · Annals of Human Biology · 1980 · 20 citations
Medicine, Genetics, Obstetrics +9