You are magical

Unexpected occurences have always caused panic, but explorers and scientists seek to find answers and explanations.

This complete Spanish translation of the highly acclaimed Isaac Asimov's 21st Century Library of the Universe is ideal for students still developing their English-language skills.

Los juguetes, los oficios y los medios de transporte son los protagonistas de Caballo ACCIÓN, una nueva serie dentro de la colección de Caballo Alado que combina magníficas ilustraciones con fotografías, y textos sencillos que combinan la letra de palo y la manuscrita. Cada título incluye un breve apartado documental que complementa el texto básico.

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.