00277nam a2200109Ia 4500008004100000020001800041082001000059100002100069245003000090260003900120300000800159211112s9999    xx            000 0 und d  a9789351761204  bNIK-G  aNIKHIL KR.GUPTA  0aGATE CHEMICAL ENGINEERING  aDONATED BY V.C. SIRbARIHANTc2015  a256