00338nam a22001457a 450000500170000002000180001704100120003508200190004710000190006624500450008525000070013026000360013730000080017336500110018120260507120617.0  a9789391820046  aEnglish  a530.15 R21 GAH  aGahlaut Savita  aAdvanced Mathematical Methods in Physics  a01  aNew Del;hibSultan & Sonsc2021  a370  b250.00