1978-05-25 /bb-d868a-bm/01/subsys/usag20.exe 1978-09-07 /AP-4172F-BM/01/new-subsys/usag20.exe 1978-09-07 /bb-d868b-bm_tops20_v3a_2020_dist/01/new-subsys/usag20.exe 1978-09-07 /AP-4171F-BM/06/new-subsys/usag20.exe 1978-09-07 /BB-H138A-BM/01/new-subsys/usag20.exe 1978-09-07 /BB-H137A-BM/06/new-subsys/usag20.exe 1980-02-05 /BB-H138B-BM/01/new-subsys/usag20.exe 1980-02-05 /red405a2/11/subsys/usag20.exe 1980-02-05 /bb-d868c-bm_tops20_v4_2020_distr/01/new-subsys/usag20.exe 1980-02-05 /KS10_APT_INSTALL_TAPE/08/subsys/usag20.exe 1980-02-05 /BB-J713A-BM/01/new-subsys/usag20.exe 1980-02-05 /BB-J712A-BM/08/new-subsys/usag20.exe 1980-02-05 /BB-H137B-BM/06/new-subsys/usag20.exe 1980-02-05 /BB-D868C-BM/01/new-subsys/usag20.exe 1980-02-05 /BB-4171G-BM/06/new-subsys/usag20.exe 1980-02-05 /BB-4172G-BM/01/new-subsys/usag20.exe 1980-02-05 /BB-5254D-BM/06/new-subsys/usag20.exe 1980-02-05 /BB-5255D-BM/01/new-subsys/usag20.exe 1980-02-05 /BB-D867C-BM/08/new-subsys/usag20.exe 1980-02-05 /BB-D867D-BM/08/new-subsys/usag20.exe 1980-02-05 /BB-D868D-BM/01/new-subsys/usag20.exe 1982-04-13 /BB-M836A-BM/01/tools/usag20/usag20.exe 1982-04-13 /BB-M836B-BM/01/tools/usag20/usag20.exe 1982-04-13 /BB-4172H-BM/01/new-subsys/usag20.exe 1982-04-13 /BB-D867E-BM/08/new-subsys/usag20.exe 1982-04-13 /BB-4171H-BM/06/new-subsys/usag20.exe 1982-04-13 /bb-d868e-bm_tops20_v41_2020_dist_1of2/01/new-subsys/usag20.exe 1985-07-11 /BB-M836C-BM/01/tools/usag20/usag20.exe 1988-03-10 /k20v7c/01/tools/usag20.exe 1988-03-10 /k20v7d/01/tools/usag20.exe 1988-05-27 /bb-m836d-bm/01/tools/usag20/usag20.exe 1988-05-27 /tops20_version7_0_tools_tape_clock_tape/01/tools/usag20/usag20.exe