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020 - INTERNATIONAL STANDARD BOOK NUMBER (R)
The ISBN assigned to a monographic publication by designated agencies in each country participating in the program. The field may include terms of availability and canceled or invalid ISBNs. It may be repeated for multiple numbers associated with different entities (e.g. ISBNs for the hard bound and paperback manifestations; ISBNs for a set as a whole and for the individual parts in the set).
Indicators
- First - Undefined
- # - Undefined
- Second - Undefined
- # - Undefined
Subfield Codes
- $a - International Standard Book Number (NR)
The valid ISBN and any parenthetical qualifying information. ISBN and the embedded hyphens may be generated for display. - $c - Terms of availability (NR)
The price or a brief statement of availability and any parenthetical information qualifying the information. - $z - Canceled/invalid ISBN (R)
A canceled or invalid ISBN and any parenthetical qualifying information. ISBN (invalid) and the embedded hyphens may be generated for display. - $6 - Linkage (NR) See Control Subfields
- $8 - Field link and sequence number (R) See Control Subfields
Examples
020 |
##$a0491001304 |
020 |
##$a0914378260 (pbk. : v. 1) :$c$5.00 |
020 |
##$a0394502884 (Random House) :$c$12.50 |
020 |
##$a0877790019 (black leather)$z0877780116 :$c$14.00 |
020 |
##$a0456789012 (reel l) |
020 |
##$c$8.95 |
020 |
##$cRs15.76 ($5.60 U.S.) |
020 |
##$cRental material |
020 |
##$cFor sale ($200.00 for 3/4 in.; $150.00 for 1/2 in.) |
020 |
##$c$3.60 (pbk.) |

