Cómo funcionan los ecosistemas

Primer volumen de la compilación de la correspondencia del autor de Rayuela . Unas cartas que pueden leerse como diario personal, autobiografía o cuaderno de bitácora de sus libros. «Odio las cartas literarias , cuidadosamente preparadas, copiadas y vueltas a copiar; yo me siento a la máquina y dejo correr el vasto río de los pensamientos y los afectos», escribió Julio Cortázar en 1942: una declaración de principios que mantuvo siempre. Con curiosidad permanente, Cortázar da cuenta de todos los aspectos de su actividad como escritor, de sus desvelos políticos y sus vaivenes...

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.

The Sri Lanka Travel Map from Periplus is designed as a convenient, easy-to-use tool for travelers. Created using durable coated paper, this map is made to open and fold multiple times, whether it's the entire map that you want to view or one panel at a time. Following highways and byways, this map will show you how to maneuver your way to banks, gardens, hotels, golf courses, museums, monuments, restaurants, churches and temples, movie theaters, shopping centers and more! This 3rd edition includes maps and plans that are scaled to: Area Map: Sri Lanka 1:525,000 City Plans:Colombo 1:15,000...

A selection of dazzling, full-color graphic novels offer an appealing way to deliver social studies content, chronicling the lives of inspiring individuals, from important historical figures to famous musicians.