Legacy Systems
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Editions/Publications:
- 2012 . Legacy Systems (2012, NASA, Pinbeam Books, ISBN-10: 9781935224921, $2.99, ebook, Collection)
- 2018 . Legacy Systems (2018, NASA, Pinbeam Books, ISBN-10: 9781948465014, $8.00, 77 pages, Trade Paperback, Collection)