000 00324nam a2200109Ia 4500
008 140113s9999 xx 000 0 und d
100 _a"Hellman, A., et al�"
245 _aBiohazards in biological research :Proceedings of a conference
260 _a1973
_bCold Spring Harbour Lab.
_cNew York
300 _a369
942 _cBK
999 _c59034
_d59034