共 50 条
- [2] TWIN OVULATIONS AND TWIN BIRTHS IN CATTLE [J]. CANADIAN JOURNAL OF ANIMAL SCIENCE, 1974, 54 (02) : 259 - 259
- [5] Twin births in Germany [J]. JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 1934, 103 : 0122 - 0123
- [9] PERINATAL MORTALITY IN TWIN BIRTHS [J]. GEBURTSHILFE UND FRAUENHEILKUNDE, 1977, 37 (04) : 286 - 290