Enter the dates of the original in Dates. Code DtSt for the original. Date of serial covers more than one year. Enter the latest named year. Enter data based on the period covered.
Serial date has more than one date in the Christian era.
Enter the first named Christian era year. Use u for digits missing in probable dates. Enter the date to the closest decade or century. Substitute a lowercase u for each missing digit. 500 Previously published in 1963.