1979-02-02 /BB-H506D-SM_1983/01/cobol/source/c74ots.ccl 1979-02-02 /BB-H580C-SB_1981/02/c74ots.ccl 1985-09-25 /BB-H580E-SB_1985/03/c74ots.ccl 1985-09-25 /cobol12c/03/c74ots.ccl