00506nam a2200169ua 4500003001000000005001700010008004100027020001800068040003000086100002500116245008500141260003300226504003200259650001700291655001000308700001800318AR-SsjUCA20250715141547.0250228s1978 xxu 000 0 eng d a0-85274-292-4 aAR-SsjUCAbspacAR-SsjUCA1 aRoy, Archie Edmiston10aAstronomy :bprinciples and practice /cby Archie Edmiston Roy and David Clarke. aBristol :bA. Hilger,c1978. aBibliografía: p. 332-333. 4aAstronomía 4aTexto1 aClarke, David