1979-10-26 /ap-c800d-sb/01/cobol.sd 1981-07-20 /BB-H580C-SB_1981/01/cobol.sd 1983-09-01 /BB-H506D-SM_1983/01/cobol/documentation/cobol.sd 1984-02-23 /BB-Z759A-SM/01/documentation/cobol.sd 1985-11-13 /BB-H506E-SM/01/cobol/documentation/cobol.sd 1985-11-13 /BB-H580E-SB_1985/01/cobol.sd 1985-11-13 /cobol12c/01/cobol.sd