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To support prediction of expected serial issues add support for specify frequency rules for a serial record in serials management app.
This should support ability specify frequency of issues per day/week/month/year. Initial implementation will assume that 1 per day is the most frequent required although this may be reviewed in the future.
This approach will support at least the following code options from MARC 853 $$w:
| a - Annual |
i - Three times a week |
| b - Bimonthly |
j - Three times a month |
| c - Semiweekly |
m - Monthly |
| d - Daily |
q - Quarterly |
| e - Biweekly |
s - Semimonthly |
| f - Semiannual |
t - Three times a year |
| g - Biennial |
w - Weekly |
| h - Triennial |
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(MARC also specifies "k - Continuously updated" and "x - Completely irregular" which are not included here as they are not frequency patterns as such but more descriptive of the way something is published)
Other aspects of frequency (e.g. omissions, combinations) are subject of other features
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