853 CAPTIONS AND PATTERN--BASIC BIBLIOGRAPHIC UNIT (R)
Indicators
First Compressability and expandability
0 Cannot compress or expand
1 Can compress but not expand
2 Can compress or expand
3 Unknown
Second Caption evaluation
0 Captions verified; all levels present
1 Captions verified; all levels may not be present
2 Captions unverified; all levels present
3 Captions unverified; all levels may not be present
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)
$t Copy (NR)
$u Bibliographic units per next higher level (R)
<n> Number of parts
var Varies
und Undetermined
$v Numbering continuity (R)
c Number increments continuously
r Numbering restarts at the completion of the
unit
$w Frequency (NR)
a Annual i Three times a week
b Bimonthly j Three times a month
c Semiweekly m Monthly
d Daily q Quarterly
e Biweekly s Semimonthly
f Semiannual t Three times a year
g Biennial w Weekly
h Triennial x Completely irregular
$x Calendar change (NR)
Month Day Season
01-02 Month 01-31 Day 21 Spring 23 Autumn
22 Summer 24 Winter
$y Regularity pattern (NR)
Publication code
o Omitted
p Published
Chronology code definition
d Day
m Month
s Season
w Week
Chronology Code
Day of week Season Day of month
mo Monday 21 Spring 01-31
tu Tuesday 22 Summer
we Wednesday 23 Autumn
th Thursday 24 Winter
fr Friday
sa Saturday
su Sunday
Week of month Week Month
99 Last 01-53 01-12
98 Next to Last
97 Third to Last
00 Ever
01 First
02 Second
03 Third
04 Fourth
05 Fifth
$z Numbering scheme (R)
$3 Materials specified (NR)
$8 Link and sequence number (NR)