(P1544)
Data type
External identifier
Statements
https://federalregister.gov/a/$1
0 references
(20[12]\d|9[3-9]|[0E]\d)-[1-9]\d{0,4}
year of publication (2 or 4 digits), then "-", then a 1 to 5-digit number (English)
0 references
no value
0 references
Constraints
(20[12]\d|9[3-9]|[0E]\d)-[1-9]\d{0,4}
year of publication (2 or 4 digits), then '-', then a 1 to 5-digit number (English)
0 references