Code 280 - Form/Genre or Physical Characteristics
Repeatable for alternative script forms. Indicators not defined
Subfields: a - Entry element (NR) j - Form Subdivision (R) x - Topical subdivision (R) y - Geographical subdivision (R) z - Chronological subdivision (R) Control subfields: 0 - Instruction phrase (R) 2 - Subject system code (NR) 3 - Record number (NR) 5 - Tracing control (NR) 6 - Interfield linking data (R) 7 - Script (NR) 8 - Language of cataloging (NR)