046 SPECIAL CODED DATES (R)
Indicators - Both undefined; each contains a blank (^)
Subfield Codes $a Type of date code (NR) c - Actual date and copyright date (BK CF MP MU VM) [OBSOLETE] i - Inclusive dates of collection k - Range of years of bulk of collection m - Multiple dates n - Date unknown p - Distribution/release/issue and production/recording session dates q - Questionable date r - Reissue and original dates s - Single known/probable date t - Publication and copyright dates x - Incorrect dates $b Date 1 (B.C. date) (NR) $c Date 1 (C.E. date) (NR) $d Date 2 (B.C. date) (NR) $e Date 2 (C.E. date) (NR) $j Date resource modified (NR) $k Beginning or single date created (NR) $l Ending date created (NR) $m Beginning of date valid (NR) $n End of date valid (NR) $2 Source of date (NR) $6 Linkage (NR) $8 Field link and sequence number (R)