A Strategy for Structural-Acoustic Problems. Basic Notions on Variational Formulations. Linearized Vibrations of Conservative Structures and Structural Modes. Dissipative Constitutive Equation for the Master Structure. Master Structure Frequency Response Function. Calculation of the Master Structure Frequency Response function in the LF Range. Calculation of the Master Structure Frequency Response Function in the MF Range. Reduced Model in the MF Range. Response to Deterministic and Random Excitations. Linear Acoustic Equations. Internal Acoustic Fluid Formulation for the LF and MF Ranges. External Acoustic Fluid: Boundary Integral Formulation for the LF and MF Ranges. Structural-Acoustic Master System in the LF Range. Structural-Acoustic Master System in the MF Range. Fuzzy Structure Theory. Appendix: Mathematical Notations. References. Subject Index. Symbol Index.