866 Examples:

853 20$61$av.$bno.$u9$vr$i(year)$j(month)$wm$x01$yom06,07,08

863 32$61.1$a1-4$i1941-1943

863 32$61.2$a6-86$i1945-1987

866 31$60$a1-86 (1941-1987)$xbound in 2 v. per year$zSome issues missing

[The 866 field replaces both 863 fields. The library records actual detailed holdings in the 863 fields, but the display shows summary holdings with non-public and public notes.]