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"This oversized book introduces children to the alarming number of species that are endangered, threatened or, unfortunately, extinct. It includes amphibians, birds, mammals, reptiles, and fish, devoting an entire page to each animal. Readers will learn the threats facing each one, where each one lives or lived, including the type of habitat, its diet, size, and ongoing conservation efforts."

Look up at the night sky. What do you see? This Spanish nonfiction reader introduces students to the subject of scientific observation, and teaches students about the things we use to observe and learn about the world around us. Aligned to state and national standards, the book contains easy-to-read text and nonfiction text features like an index, a glossary, captions, bold font, and detailed images to keep students connected to the text. A hands-on science experiment helps students apply what they have learned and develops critical thinking skills.

The greatest thinkers of humanity at your fingertips, in minutes! If you thought you would never be able to understand the essential classic authors, you were wrong! With our "Summarized Classics" collection, you will understand the main ideas of the most important thinkers in a very short time and with little effort. The present volume covers the central axes of this discipline. Among them, the reader will find an analysis of the following Genetic Psychology Studies (1973) and Structuralism (1968), among others. It includes a glossary.

El presente volumen incluye dos obras de juventud de una de las personalidades más relevantes del siglo XVI italiano: Eneas Silvio Picolomini (1405-1464), conocido como Pio II tras ser elegido papa en 1458. La colección de poemas Cintia está formada por veintitrés composiciones de tono erótico destinadas a Angela Acherisi. Por su parte, la Historia de dos amantes narra el amor de Lucrecia, noble matrona de la ciudad de Siena, por Euríalo, caballero de la corte del emperador Segismundo, y en ella adquiere mucha importancia la comunicación epistolar.