Marsh, G. N., & Channing, D. M. (1989). Audit of 26 years of obstetrics in general practice.
Dyfyniad Arddull ChicagoMarsh, G. N., and D. M. Channing. Audit of 26 Years of Obstetrics in General Practice. 1989.
Dyfyniad MLAMarsh, G. N., and D. M. Channing. Audit of 26 Years of Obstetrics in General Practice. 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.