Aullar, rugir, mugir y ladrar: Un libro sobre sonidos de animales (Howl, Growl, Mooo, Whooo, A Book of Animals Sounds)

Offers a description of Earth, the third planet from the sun, which includes information on its origins, composition, and unique characteristics.

[English] Explains many different ways that children can be good citizens and show good citizenship. [Spanish] Ser ciudadano de un país es algo muy especial. Los buenos ciudadanos están orgullosos de sus acciones y defienden sus principios. ¿Cómo somos buenos ciudadanos?

Una guía al mundo prehistórico de los dinosaurios con mapas, ilustraciones, texto, y extensiones gráficas.

In one of his works, Barthes wrote; "If I was a writer and I was dead, I would like that my life be reduced through the care of a friendly and confident biographer, to some details ... whose distinction and mobility could be translated out of any destiny."And Calvet has made it.