  Introduction to Perturbation Techniques (Hardcover) ISBN-13: 9780471080336 ISBN-10: 0471080330 Genres: Science & Math, Engineering & Transportation ?  Perturbation Methods [Pure and Applied Mathematics] (Hardcover) ISBN-13: 9780471630593 ISBN-10: 0471630594 Genre: Science & Math ?  Problems in Perturbation (Hardcover) ISBN-13: 9780471822929 ISBN-10: 0471822922 Genre: Science & Math ? |
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