1980-01-11 /BB-4148D-BM/01/dbms-v5a/source/dbms20.log 1980-01-11 /BB-4148D-BM_1980/01/dbms-v5a/source/dbms20.log 1981-09-24 /BB-4148E-BM/01/sources/dbms20.log 1981-09-24 /DBMS-20_V6.0_bin_9-25-81/01/sources/dbms20.log 1981-09-24 /DBMS-20_V6_BIN_19811001/01/sources/dbms20.log