History

	City of the Stargazers: The Rise and Fall of Ancient Alexandria by Kenneth Heuer Year: 1972 Hits: 2990 Date insert: Monday, 31 December 2018
	Clyde Tombaugh: Discoverer of Planet Pluto by McGraw-Hill NA, Linda S. Sparke Year: 2007 Hits: 3176 Date insert: Monday, 31 December 2018
	Complete documentation for the naming of the royal astronomical society of canada by Peter M. Millman Year: 1989 Hits: 2956 Date insert: Monday, 31 December 2018
	Copernicus and the Changing World: a Biographical Sketch by Wanda Stachiewicz Year: 1973 Hits: 3001 Date insert: Monday, 31 December 2018
	Cosmic Discoveries by Wendee Wallach Levy Year: 2001 Hits: 3677 Date insert: Monday, 31 December 2018