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1Digital revistaSCIELO
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2by Herrera, Cristina, García Barrantes, Pedro M., Binns, Franklin, Vargas, Marianela, Poveda, Luis Jorge, Badilla, Sandra
Published 2011http://purl.org/coar/resource_type/c_6501 bibliotecaUNA CR -
3by Scott, Ian, Jensen, Helen R., Nicol, R.W., LeSage, Laurent, Bradbury, Rod, Sánchez Vindas, Pablo, Poveda, Luis Jorge, Arnason, John, Philogéne, Bernard J.R.
Published 2004http://purl.org/coar/resource_type/c_6501 bibliotecaUNA CR