000			00335nam a2200133Ia 4500
008			140215s9999 xx 000 0 und d
084			_aE _bWAD;1953
100			_awaddington, C H .
245			_aHow Do Cells Differentiate / _b
260			_bScientific American , _aUSA : _c1953
300			_a6p :
650			_aEconomic
942			_2cc _cBK
999			_c5607 _d5607