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2. Clarification of Fortran standards—initial progress
3. Burroughs B6700/B7700 Fortran Reference Manual, Burroughs Corporation, Detroit, Mich., 1972.
4. Decsystem 10 Fortran-10 Language Manual, Digital Equipment Corporation, Maynard, Mass., 1973.
5. IBM System/360 and System/370 Fortran IV Language, International Business Machines Corporation, New York, 1974.