Cite
HARVARD Citation
Butler, N. et al. (1972). Cigarette Smoking in Pregnancy: Its Influence on Birth Weight and Perinatal Mortality. BMJ. 2 (5806), pp. 127-130. [Online].
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Butler, N. et al. (1972). Cigarette Smoking in Pregnancy: Its Influence on Birth Weight and Perinatal Mortality. BMJ. 2 (5806), pp. 127-130. [Online].