共 50 条
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- [34] DEATHS FROM ECTOPIC PREGNANCY, UNITED-STATES, 1979 TO 1980 OBSTETRICS AND GYNECOLOGY, 1983, 62 (03): : 334 - 338
- [38] MICHAEL 1979 SUMMARY OF BEE DISEASE LAWS OF THE UNITED-STATES AMERICAN BEE JOURNAL, 1980, 120 (03): : 170 - 174