855 CAPTIONS AND PATTERN--INDEXES (R)
Indicators Undefined; each contains a blank (^)
Subfield Codes
$a First level of enumeration (NR)
$b Second level of enumeration (NR)
$c Third level of enumeration (NR)
$d Fourth level of enumeration (NR)
$e Fifth level of enumeration (NR)
$f Sixth level of enumeration (NR)
$g Alternative numbering scheme, first level of enumeration (NR)
$h Alternative numbering scheme, second level of enumeration (NR)
$i First level of chronology (NR)
$j Second level of chronology (NR)
$k Third level of chronology (NR)
$l Fourth level of chronology (NR)
$m Alternative numbering scheme, chronology (NR)
$o Type of index (NR)
$t Copy (NR)
$u Bibliographic units per next higher level (R)
$v Numbering continuity (R)
$w Frequency (NR)
$x Calendar change (NR)
$y Regularity pattern (NR)
$3 Materials specified (NR)
$4 Copyright message (NR)
$6 Linkage (NR)
$8 Link and sequence number (NR)
$9 Type of program (NR)