Information used
| DateType | 008:06 |
| Date1 | 008:07-10 |
| Date2 | 008:11-14 |
| PubPlace | 008:15-17 |
| PubPlace17 | 008:17 (last byte of pub place. “u” indicates published in the US, otherwise non-US) |
| GovPub | 008:28 |
| VolDate | Latest year parsed from z30_description field. Set to null if nothing could be parsed or if no z30_description. |
| BibFmt | Bibliographic record format (BK, SE, etc.) |
| Imprint field | 260 or 264 ind2=1 |
Process
Check of imprint field for multiple subfield a:
If PubPlace 17 eq “u”, and the imprint field contains multiple subfield a’s, then the data in each subfield a is normalized and matched against a list of known US cities. If any of the subfield a’s are not in the list, then the mult_260a_non_us flag is set.
Determination of date:
If the Date1 or Date2 field contains all fill characters or blanks, it is set to null. If it contains at least one digit, then any occurrence of “u” or a fill character is changed to “9”. So, “19uu” would be changed to “1999”.
BibFmt eq 'SE' and VolDate exists:
date_used = VolDate
date_used = VolDate
DateType eq 't':
if Date2 exists, date_used = Date2
if Date1 exists, date_used = Date1
otherwise, date_used = unknown
DateType eq 'r' or 'e':
if Date1 exists, date_used = Date1
otherwise, date_used = unknown
Otherwise:
if Date2 exists and Date2 > Date1, date_used = Date2
if Date1 exists, date_used = Date1
otherwise, date_used = unknown
Assignment of rights attribute (a complete explanation of rights attributes is available at http://www.hathitrust.org/rights_database):
(The first status set is the one that is used.)
For US publications (PubPlace17 eq “u”):
For government publications (GovPub eq “f” ):
If NTIS (imprint field contains “ntis” or “national technical information service”) and pub_date > (current_year – 6)
then status = “ic”
else if Smithsonian (110, 130, 260, or 710 field contains “smithsonian”)
and pub_date >= 1923
then status = “ic”
else if
NIST-NSRDS (series field 400|410|411|440|490|800|810|811|830 contains “nsrds” or “national standard reference data series”)
or Federal Reserve (author field 100|110|111|700|710|711 contains "federal reserve")
and pub_date >= 1923
then status = “ic”
else status = “pd”
For non-government publications (GovPub not “f” ):
If mult_260a_non_us eq ‘y’ and date_used is between 1873 and 1922 inclusive, then status = “pdus”
If date_used is < 1923 then status = “pd”
Otherwise, status = “ic”
For non-US publications (PubPlace17 not “u”):
If date_used is < 1873 then status = “pd”
If date_used is >= 1873 and date_used < 1923 then status is pdus
Otherwise, status = “ic”