000 00301nam a2200097Ia 4500
001 MPKV112636
008 120911s9999 xx 000 0 und d
245 _aJournal of association of analytical chemists Vol.73 No.4-6
_c;
246 _aJournal of association of analytical chemists Vol.49
260 _c1990
999 _c75911
_d75911