https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%22INGLES%20COMERCIAL%22%29&sort_by=title_az&format=rss 5 0 50 ISBN:058252606X https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=19613 ]]> By Eckersley, C. E..
Hong Kong : Longman, 1954 .
176 p. : 058252606X

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=19613 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=19621 By Beesley, Alan R..
London : MacMillan, 1972 .
201 p. :

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=19621 ISBN:9681401387 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=31283 ]]> By Balcárcel, Celia.
México : Eca, 1988 .
187 p. 9681401387

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=31283 ISBN:9681400291 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=31284 ]]> By Balcárcel, Celia.
México : Eca, 1984 .
122 p. 9681400291

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=31284 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=31324 By Baty, Wayne Murlin.
Barcelona, Esp. : Oikos-tau, 1971 .
588 p.

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