1.
London : Library Association Pub., c1999.
Fourth edition.
English | N 639 NOR.C |
2.
Boston Spa, West Yorkshire : IFLA Offices for Universal Availability of Publications and International Lending, [1996]
English | N 639 IFLA.C |
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5.
Chicago : American Library Association, c1995.
Second edition.
English | N 639 BRU.C |
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