00259nam a2200109Ia 4500008004100000041001200041082001100053100001700064245005500081260000600136650000700142221030s9999    xx            000 0 und d  aEnglish  a105.23  aH. M. Wagner 0aPrinciples Of Operations Resaerchcby H. M. Wagner  c0  aMb