dear friends, i need the following books:
can u help to find them:

1- "Introduction to Dynamics of Rotor-bearing Systems" by Wan Jeng Chen, 2001, Edgar J.Gunter, ISBN 1412051908
2- "Rotor Dynamics" by J.S. Rao, 3rd Edition, 1996, John Wiley&Sons, ISBN 0852267878
3- "Bearing Influence and Representation in Rotor Dynamics Analysis, Flexible Rotor-bearing System Dynamics", by Wilbur Shapiro, 1972, ASME, ASIN B0006CB09C
4- "Some Problems of Rotor Dynamics", by Alexic Tondl, 1965, Chapman&Hall, ASIN B0007IUYE2
5- "Some Problems of Self-Excited Vibrations of Rotors", by Alexic Tondl, 1974, NRIMD, ASIN B0007AI730
6- "Vibration Analysis of Rotors - Solid Mechanics and its Applications", by Chong-Wong Lee, 1993, Springer, ISBN 0792323009
7- "Linear and Non-Linear Rotordynamics: a Modern Treatment with Applications", by Toshio Yamamoto and Yukio Ishida, 2001, Wiley-Interscience, ISBN 0471181757.


thank u.