http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%226537%22&format=rss2 7 0 50 ISBN http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=3847 By Schultz, Samuel J.. New York : Harper & Row, 1960 . xii, 436 p. ; 24 cm..

]]> http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=3847 ISBN http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=5834 By Schultz, Samuel J.. New York : Harper & Row, 1960 . xii, 436 p. ; 24 cm..

]]> http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=5834 ISBN http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=15872 By Schultz, Samuel J.. New York : Harper & Row, 1968 . 159 p. ; 21 cm..

]]> http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=15872 ISBN http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=16339 By Schultz, Samuel J.. San José, C.R. : Caribe, 1971 . 121 p. ; 20 cm..

]]> http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=16339 ISBN 84-7293-036-X http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=17134 By Schultz, Samuel J.. Grand Rapids, Mich. : Outreach, 1982 . 416 p. : 23 cm.. 84-7293-036-X

]]> http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=17134 ISBN http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=5833 By Schultz, Samuel J.. Chicago : Moody, 1971 . 127 p. ; 19 cm..

]]> http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=5833 ISBN http://biblioteca.ubl.ac.cr/cgi-bin/koha/opac-detail.pl?biblionumber=6494 By Schultz, Samuel J.. New York : Harper & Row, 1974 . x, 165 p.; 21 cm..

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