Used in an established heading or established heading and subdivision record to trace a see from reference from a topical term not used in an established heading.

Subfield Codes

$a - Topical term entry element (NR). In UNBIS, the complete topical term is entered in $a.

150 $a HYBRID VEHICLES
496 $a 混合动 力车
496 $a 燃油电 力两用车
996 $a 混合电 动车

Tag 996 is «Heading-Topical Term (Chinese)»