por Molina, Mario J [autor] | Anger, Natalie [autor] | Meech, Karen J [autor] | Hyman, Scott [autor] | Perló, Manuel [autor] | Chacón, Joaquín-Armando, 1944- [autor] | McAnally, Elizabeth [autor] | MacLeod, Janine [autor] | Villalobos, Roxana [autor] | Carrera, Mauricio Alexande [autor] | Bruckhardt, Titus [autor] | Gough, William C [autor].