"An intensive study of double stars and their properties, this book provides an authoritative introduction to astronomy, spectroscopy, and photometry." (Science) "Goes far beyond the mere discussion of various methods of orbit determination. . . . Very readable . . . yet as technical as necessary for the material covered." (Sky and Telescope)

"An intensive study of double stars and their properties, this book provides an authoritative introduction to astronomy, spectroscopy, and photometry." (Science) "Goes far beyond the mere discussion of various methods of orbit determination. . . . Very readable . . . yet as technical as necessary for the material covered." (Sky and Telescope)

"An intensive study of double stars and their properties, this book provides an authoritative introduction to astronomy, spectroscopy, and photometry." (Science) "Goes far beyond the mere discussion of various methods of orbit determination. . . . Very readable . . . yet as technical as necessary for the material covered." (Sky and Telescope)