1977-11-28 /AP-4172F-BM/01/3a-documentation/format.tco 1977-11-28 /BB-H138A-BM/01/3a-documentation/format.tco 1979-12-11 /BB-4172G-BM/01/4-documentation/format.tco 1979-12-11 /BB-5255D-BM/01/4-documentation/format.tco 1979-12-11 /BB-H138B-BM/01/4-documentation/format.tco 1982-03-22 /BB-H138C-BM/01/5-documentation/format.tco 1982-12-20 /BB-4172H-BM/01/4-1-documentation/format.tco 1982-12-20 /BB-H138D-BM/01/5-1-documentation/format.tco