1980-01-09 /dbmsv5a/03/dbscob.rel 1980-01-10 /BB-4148D-BM/01/dbms-v5a/source/dbscob.rel 1980-01-10 /BB-4148D-BM_1980/01/dbms-v5a/source/dbscob.rel 1981-09-24 /BB-4148E-BM/01/sources/dbscob.rel 1981-09-24 /DBMS-20_V6.0_bin_9-25-81/01/sources/dbscob.rel 1981-09-24 /DBMS-20_V6_BIN_19811001/01/sources/dbscob.rel