https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=21302 --- Comment #2 from Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com> --- Hi Heather, I should maybe have specified that the situation I was describing did *not* use UseControlNumber. If UseControlNumber is activated, the exact control number in $w is searched in the control-number index, as you described in your use case. When that syspref is deactivated, and you have values in 780/785 $a and/or $t the values are searched in the title index (or they were in 2018 when I wrote this bug report). In the same link you provided https://www.loc.gov/marc/bibliographic/bd760787.html under subfield $a it says it's the main entry ("Main entry heading data (without the content designators) from field 100 (Main Entry-Personal Name), 110 (Main Entry-Corporate Name), or 111 (Main Entry-Meeting Name) in the related record.") meaning it should contain the author's name. My proposal was to search for the value in $a in the author index rather than the title index. This bug is four years old, the code may have changed since. -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.