http://31.97.24.37/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22UNESCO%20%22&sort_by=relevance&format=rss 3 0 20 ISBN:8430108971 http://31.97.24.37/cgi-bin/koha/opac-detail.pl?biblionumber=20866 ]]> By UNESCO .
Salamanca : Sígueme, 1983 .
269 p ; 21 cm.
8430108971

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]]> http://31.97.24.37/cgi-bin/koha/opac-detail.pl?biblionumber=20866 ISBN:8430104879 http://31.97.24.37/cgi-bin/koha/opac-detail.pl?biblionumber=21532 ]]> By Unesco .
Salamanca : Sígueme, 1977 .
387 p 8430104879

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]]> http://31.97.24.37/cgi-bin/koha/opac-detail.pl?biblionumber=21532 ISBN: http://31.97.24.37/cgi-bin/koha/opac-detail.pl?biblionumber=22382 By Adamson, Peter .
Barcelona : J y J Asociados, 1989 .
78 p ; fts. : 23 cm.

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