000 00249 a2200121 4500
008 151002tJan-oct. 1978
245 _aMutation Research
250 _aVol. 55 No.1-4
260 _aU.S.A.
260 _bELSEVIER
260 _cJan-oct. 1978
942 _cBV
999 _c4106
_d4106