Tekijä Gries, Gerhard, Gries, Regine, Pérez Sánchez, Alice Lorena, Gonzales, Lilliana M., Pierce Jr., Harold D., Oehlschlager, Allan Cameron, Rhainds, Marc, Zebeyou, Mesmer, Kouame, Brou

Organisaatio: Universidad de Costa Rica

Repositorio: Kérwá