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– Evaluation and Design. Richmond, VA: Willmann-Bell. p. 127. ISBN 0-943396-18-2. List of telescope types Newtonian telescope "Image gallery of a Lurie–Houghton...5 KB (570 words) - 05:24, 27 September 2023
Venrooij, Telescope Optics, Evaluation and Design, Willmann-Bell, ISBN 0-943396-18-2 Neal Eltinge Howard, Standard Handbook for Telescope Making (Hardcover)...14 KB (1,741 words) - 07:09, 14 April 2023
Venrooij, Martin (2002). Telescope Optics. Willmann-Bell. p. 67. ISBN 0-943396-18-2. Bowen, I.S.; Vaughan, A.H. (1973). "The optical design of the 40 in...16 KB (2,145 words) - 21:22, 15 July 2024
Telescope Optics: Evaluation and Design. Richmond, VA: Willman–Bell. ISBN 0-943396-18-2. Baril, Marc René. "A photovisual Maksutov Cassegrain telescope". Archived...17 KB (1,815 words) - 12:20, 24 August 2023
van Venrooij, M. (1989) [1988]. Telescope Optics. Willmann-Bell. ISBN 0-943396-18-2. Harrington, Philip S. (25 February 2011) [April 2007]. Star Ware: An...47 KB (6,470 words) - 04:52, 11 May 2024
