00261nam a2200109Ia 4500008004100000041001200041082001100053100001900064245005600083260000600139650000600145221030s9999    xx            000 0 und d  aEnglish  a105.23  aP. D. S. Verma 0aAdvanced Engineering Mathematicscby P. D. S. Verma  c0  aB