31. National union catalog, cumulative author list representing Library of Congress printed cards and titles reported by other American libraries. Bookmark Corporate/Agency Authors: Library of Congress Publisher: Library of Congress SuDoc number: LC 30.8:(date)
32. Natioual union catalog, cumulative author list representing Library of Congress printed cards and titles reported by other American libraries. Bookmark Corporate/Agency Authors: Library of Congress Publisher: Library of Congress SuDoc number: LC 30.8:(date)