Приглашаем! Новогодняя встреча московских любителей астрономии!
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>At the meeting of the Antique Telescope Society in Denver last September, >Yuri Petrunin (author of S&T article on DDM a few years back & owner of TEC >telescopes), brought some Maksutov materials to our display. Including a >small notebook that was DDM's workbook for some period of time.