Code 716 - Linking Heading, TrademarkRepeatable Indicators not definedSubfields: a - Data element (NR) f - Dates (NR) c - Qualification (R) j - Form Subdivision (R) x - Topical subdivision (R) y - Geographical subdivision (R) z - Chronological subdivision (R) Control subfields: 2 - Subject system code (NR) 3 - Record number (NR) 7 - Script (NR) 8 - Language of cataloging (NR)