Simpson, J. Y., & Collins, D. (1848). On the duration of labour as a cause of mortality and danger to the mother and infant; etc.: In reply to a letter of Dr. Collins. Sutherland & Knox.
MLA CitationSimpson, James Young, and Dr Collins. On the Duration of Labour as a Cause of Mortality and Danger to the Mother and Infant; Etc.: In Reply to a Letter of Dr. Collins. Sutherland & Knox, 1848.
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