1980-06-30 /decus_20tap2_198111/01/decus/20-0049/for06.dat 1980-06-30 /decuslib20-02/01/decus/20-0049/for06.dat 1981-02-01 /decus_20tap4_198111/01/decus/20-0101/for06.dat 1981-02-01 /decuslib20-04/01/decus/20-0101/for06.dat