To Professor Simpson, of Edinburgh, in reply to his letter to Dr. Collins, on the 'Duration of labour as a cause of mortality and danger to mother and infant' :

Second letter.
Bibliographic Details
Main Creator: Collins, Robert, 1801-1868.
Contributors: Simpson, Professor.
Format: Book
Language:English
Published / Created: Dublin : Hodges & Smith, 1848.
Subjects:
Notes:Physical description: 24 p. ; (8vo)
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