045 First indicator: Value 2 - Range of dates/times

Value 2 indicates that two $b and/or $c subfields are present and that they contain a range of dates/times. (Multiple single dates and/or times are identified by value 1 .)

Examples:

650 #0$aShenandoah Valley Campaign, 1864 (May-August)

045 2#$d186405$bd186408

650 #0$aAurignacian culture.

045 2#$c25000$c15000