046 TYPE OF DATE CODE, DATE 1, DATE 2 (B.C. DATES) (NR)
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; assumed to be B.C.
p - Date of distribution/release/issue
and production/recording session
when different
q - Questionable date
r - Reprint/reissue date and original date
s - Single known date/probable date
t - Publication date and copyright date
$b Date 1 (B.C. date) (NR)
$c Date 1 (A.D. date) (NR)
$d Date 2 (B.C. date) (NR)
$e Date 2 (A.D. date) (NR)