00243nam a2200109Ia 4500008004100000041001200041082001100053100001800064245003900082260000600121650000600127221030s9999    xx            000 0 und d  aEnglish  a105.23  aP. K. Agarwal 0aI. I. T. Physicscby P. K. Agarwal  c0  aB