00265nam a2200109Ia 4500008004100000041001200041082001100053100001400064245006500078260000600143650000600149221030s9999    xx            000 0 und d  aEnglish  a105.23  aK. S. Rao 0aIntroduction To Partial Differential Equationscby K. S. Rao  c0  aB