1. Obstetrics;Hirst,1888
2. Manual of midwifery;Galabin,1886
3. Die thermometric des uterus;Cohnstein;Virchows Arch. Abt. A Pathol. Anat,1875
4. Temperature relationship of the mother and fetus during labor;Walker;Am. J. Obstet. Gynecol,1970
5. A System of Obstetrics,1888