A new system of midwifery - in four parts; founded on practical observations. The whole illustrated with copper plates. By Robert Wallace Johnson, M.D

Förlag	År	Ort	Om boken
printed for the author, by P. Norbury; and sold by J. Johnson; R. Baldwin; and G. Nicol and T. Cadell, London	1786	England, Brentford	viii,[4],454p.,Xplates 4⁰.
printed for the author, and sold by D. Wilson and G. Nicol	1769	England, London	[12],440p.,Xplates 4⁰.
printed for the author, and sold by D. Wilson and G. Nicol ... M.DCC.LXIX.	1769	England, London	[12],440 sidor., X utvikspl.-bl. ill. (kopparstick) 4⁰.