Cook, Alan H. Celestial masers / A. H. Cook. - Cambridge [Eng.] ; New York : Cambridge University Press, 1977. - viii, 135 p. : ill. ; 24 cm. - Cambridge monographs on physics . Includes index. Bibliography: p. 124-132. ISBN: 0521213444 : $8.00 LCCN: 76014028 Subjects--Topical Terms: Astronomical masers. LC Class. No.: QB790 / .C67 Dewey Class. No.: 523