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KUSTERS, N. L. The Ott Differential Analyser. B.I. O.S. Final Report No. 412 Item Nos. 9 and 27.
London:, British Intelligence Objectives Sub-Committee,, n.d... Paperback. Very Good++ in Original Printed Wrappers with Small Library Stamp Front Cover. No Other Library Markings. Mild Sun Spine. 8vo. Rare. Oclc Lists No Copies. Very Good++, A report issued by British Intelligence on the calculating products made by the German firm of A. Ott, including a differential analyzer (incomplete at the time this report was made.) This was the machine developed by Alwin Walther at the Institut fur Praktische Mathematik at the Technische Hochschule, Darmstadt. This firm manufactured analog computers during World War II. (Hook and Norman, Origins of Cyberspace, No. 823 and 352).
Offered for US$ 100.00 by: By The Book, LC - Book number: 38553