TY - CONF UR - https://beta-documents.el-una.org/id/eprint/572/ AV - restricted Y1 - 2009/10// M2 - Wellstone Center, St. Paul, MN TI - Authority Headings Maintenance - Questions ID - eluna572 A1 - Hearn, Stephen A1 - Heinrich, Ginny T2 - Upper Midwest Ex Libris User Group 2009 Conference ER -