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.
Example:
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
is
«Heading-Topical Term (Chinese)»
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