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024 _a72622
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aL55:3135, L0
100 _aBulmer M G
245 0 _aBiology of twinning in man
260 _c1970
300 _ap.
_ccm.
650 _aObstetrics
942 _hL55:3135, L0
_cTEXL
_2CC
999 _c35809
_d35809