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[COMPUTERS]. [HARTREE, Douglas R. (1897-1958), contributor]. Memoirs and Proceedings of the Manchester Literary & Philosophical Society (Manchester Memoirs). Volume LXXX (1935-36). Manchester, 1936. 8vo. Bound in library binding for the Institution of Electrical Engineers in full purple cloth, spine stamped in gilt, original wrappers bound-in at rear (spine sunned and worn at edges, some rubbing, soiling to boards, library inkstamps to a few early pages and front wrapper). FIRST EDITION OF THIS RARE OFFPRINT. Hartree’s article, “Some Properties and Applications of the Repeated Integrals of the Error Function,” pp. 85-102, is one of the earlier articles which influenced the design of computers (he designed a “Differential Analyser” computer to help with physics problems during his time in Manchester).