The Galaxy formatIsbn:Hardcover 9789027725455 Baldini of the “Nello Carrara formatIsbn:Hardcover 9781441907714 Baldini of the “Nello Carrara Institute of Applied Physics” (IFAC CNR) maximum likelihood (ML) methods (Chapters 3 and 4) the major ground based studies whose results are reported here illustrate the necessity for carefully conceived and executed very large scale surveys of many types of object and many parts of parameter space before a coherent picture of the Galaxy will be available The importance of the ability of satellite observatories to survey and to study wavelengths which are inaccessible from the ground is evident in the wealth of data discussed and analysed in this volume which is derived from satellites