000 00314nam a2200097Ia 45e0
008 170804s1991 xx 000 0 und d
020 _a9780521409438
100 _aJ. M. W. Slack
245 _aFrom Egg to Embryo: Regional Specification in Early Development
260 _bCambridge University Press
_c1991
999 _c220
_d220