https://biblioteca.utla.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Tocci%2C%20Ronald%22&sort_by=relevance&format=rss 2 0 20 ISBN:9688801178 https://biblioteca.utla.edu.sv/cgi-bin/koha/opac-detail.pl?biblionumber=3203 By Tocci, Ronald.
México D.F. Prentice-Hall Hispanoamericana 1988 .
624 p. il.; 23 cm. 9688801178

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]]> https://biblioteca.utla.edu.sv/cgi-bin/koha/opac-detail.pl?biblionumber=3203 ISBN:9789702609704 https://biblioteca.utla.edu.sv/cgi-bin/koha/opac-detail.pl?biblionumber=3587 By Tocci, Ronald J. Widmer, Neal S. Moss, Gregory L..
México Pearson educación 2007 .
968 p. il.; 27 cm. 9789702609704

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