Record ISBN numbers
without spaces or punctuation. A separate 020 tag is added for
every ISBN on the item.
When an item bears two or more standard
numbers, a brief qualification may be added between parentheses, preceded by a
space. Use the standard abbreviations pbk.
(paperback), ed. (edition), v., vol., vols. (volume, volumes), pt., pts. (part, parts). Otherwise, record qualifying text as it appears
on publications.
Do not
record a price in tag 020 subfield $c (prior to November 2008, the price
of UN sales publications was optionally recorded in 020 $c).
Examples:
020 $a 9280720877
020 $a 9280720872 (pbk.)
[Publication bears 2 ISBNs, one of which is for the paperback
ed.]
020 $a 0765680092 (set : alk. paper)
020 $a 9027221677 (Eur)
020 $a 1556195214 (US)
020 $a 7010002282 (v. 1)
020 $a 7010012547 (v. 2)
020 $z 0835200028
020 $a 0835200019 (pbk.)
[Two ISBNs associated with one catalogue record, one of which is invalid (subfield $z)]
020 $a 9211317134
(print ed.)
020 $a 9211315220 (electronic
ed.)
[Qualifiers appear on publication as "print edition" and "electronic
edition"]
020 $a 9789292301095
(printed)
020 $a 9789292301101 (internet)
[Qualifiers appear on publication as "printed" and "internet"]
020 $a 9781844076963
(Earthscan pbk.)
020 $a 9781844076956 (Earthscan
hardback)
[Qualifiers appear on publication as "Earthscan paperback" and "Earthscan hardback"]
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