This review discusses two significant works in the field of modal analysis: a book by D. J. Ewins and proceedings from the Third International Modal Analysis Conference. **Book by D. J. Ewins:** - **Title:** Modal Testing: Theory and Practice - **Publisher:** Wiley, New York - **Pages:** 269 - **Price:** $31.95 - **Reviewed by:** H. Saunders - **Content:** The book is the first published text on modal analysis, based on lectures and courses at Imperial College of Science and Technology and the Vibration Institute. It covers the theoretical and practical aspects of modal analysis, including impedance and mobility methods, resonance testing, and modern data acquisition systems. The book is divided into six chapters and two appendices, covering topics such as measurement methods, analysis, and test procedures. It also delves into mobility measurement techniques, experimental modal analysis, and the derivation of mathematical models. The reviewer recommends the book for engineers and analysts interested in theoretical and experimental modal analysis. **Proceedings of the Third International Modal Analysis Conference:** - **Title:** Proceedings of the Third International Modal Analysis Conference (IMAC) - **Editor:** D. J. DeMichele - **Publisher:** Union College, Schenectady, New York - **Pages:** 1337 - **Price:** $95.00 - **Content:** The conference proceedings include 190 papers presented in 45 sessions, covering various aspects of modal analysis. Key topics include analytical methods, experimental case histories, processing modal data, linking analysis and test, structural data modification, and modal test methods. The book also features extensive bibliographies and a keynote address by Professor D. J. Ewins on "Uses and Abuses of Modal Testing." The reviewer highlights the significance of the conference in advancing modal analysis techniques and the practical applications of these methods in various fields such as aerostructural systems, machine diagnostics, and structural dynamics.This review discusses two significant works in the field of modal analysis: a book by D. J. Ewins and proceedings from the Third International Modal Analysis Conference. **Book by D. J. Ewins:** - **Title:** Modal Testing: Theory and Practice - **Publisher:** Wiley, New York - **Pages:** 269 - **Price:** $31.95 - **Reviewed by:** H. Saunders - **Content:** The book is the first published text on modal analysis, based on lectures and courses at Imperial College of Science and Technology and the Vibration Institute. It covers the theoretical and practical aspects of modal analysis, including impedance and mobility methods, resonance testing, and modern data acquisition systems. The book is divided into six chapters and two appendices, covering topics such as measurement methods, analysis, and test procedures. It also delves into mobility measurement techniques, experimental modal analysis, and the derivation of mathematical models. The reviewer recommends the book for engineers and analysts interested in theoretical and experimental modal analysis. **Proceedings of the Third International Modal Analysis Conference:** - **Title:** Proceedings of the Third International Modal Analysis Conference (IMAC) - **Editor:** D. J. DeMichele - **Publisher:** Union College, Schenectady, New York - **Pages:** 1337 - **Price:** $95.00 - **Content:** The conference proceedings include 190 papers presented in 45 sessions, covering various aspects of modal analysis. Key topics include analytical methods, experimental case histories, processing modal data, linking analysis and test, structural data modification, and modal test methods. The book also features extensive bibliographies and a keynote address by Professor D. J. Ewins on "Uses and Abuses of Modal Testing." The reviewer highlights the significance of the conference in advancing modal analysis techniques and the practical applications of these methods in various fields such as aerostructural systems, machine diagnostics, and structural dynamics.