Mackness, Brian. Astronomy : a practical teaching guide / Brian Mackness and Frank Di Marzio. - Australia : Dellasta, 1994. - 61 p. : ill. ; 27 cm. 326 326 ISBN: 0-947138-40-4 Subjects--Topical Terms: Astronomy.Study and teaching. Dewey Class. No.: 520.7 / M233a