If the volumes of a multipart monograph have different forms of the common title, use a 4XX reference rather than a 5XX reference for the form of the title not chosen as the title proper of the multipart monograph. | If the volumes of a multipart monograph have different forms of the common title, use a 4XX reference rather than a 5XX reference for the form of the title not chosen as the title proper of the multipart monograph. |