00342nam a2200121Ia 450000500170000000800410001702000150005805000140007310000220008724500520010926000450016165000140020620251229175236.0251229s9999    xx            000 0 und d  a0721625150  aQD 45.C4   aCherim,stenley M. 0aChemistry for laboratory technicians.cM Cherim  aPhiladelphiabW.B.Saunders companyc1971  aChemistry