000 00302nam a2200133Ia 4500
008 160710s1995 xx 000 0 und d
020 _a0121821567
082 _a572.7 BAL
100 _aBALCH,WE ED.
245 _aMETHODS IN ENZYMOLOGY
260 _bACADEMIC
_c1995
300 _a360
942 _2ddc
_cB
999 _c61635
_d61635