http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Harold%20Koontz%22&sort_by=relevance&format=rss 2 0 50 ISBN:978-607-15-759-4 http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-detail.pl?biblionumber=198 By Harold Koontz.
México McGraw-Hill 2012 .
651 p. : 26cm..
978-607-15-759-4

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]]> http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-detail.pl?biblionumber=198 ISBN:978-507-15-1391-5 http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-detail.pl?biblionumber=200 By Harold Koontz.
México McGraw-Hill 2017 .
646p. : 27cm;.
978-507-15-1391-5

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