Observing variable stars / Gerry A. Good London Springer 2003 viii, 274p. ill. 24cm ISBN 1852334983 Includes index OBSERVING TECHNIQUES VARIABLE STARS CATACLYSMIC VARIABLE STARS CLOSE BINARY STARS AMATEUR ASTRONOMY (120/GOO) The history of astronomy: A very short introduction / Michael Hoskin Oxford OUP 2003 x, 123p ill. More @Wikipedia
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