INGLES-SIN-BARRER AS

This is a famous Easy English Course (INGLES-SIN-BARRERAS), and was thought for Spanish speakers.
Easy English Course (INGLES-SIN-BARRERAS) is the most successful English course in America. Since its creation in 1988, thousands of Spanish speaking people have learned exceptional abilities to use both written and spoken English.
Only for Spanish speakers.

Bad Astronomy

Phil Plait, the creator of Bad Astronomy, is an astronomer, lecturer, and author. After ten years working on Hubble Space Telescope and six more working on astronomy education, he struck out on his own as a writer. He's written two books, dozens of magazine articles, and 12 bazillion blog articles. He is a skeptic and fights the abuse of science, but his true love is praising the wonders of real science.

Britain in close-up

This full-colour study of contemporary Britain examines aspects of British society from government and politics, to culture and style.

Fluent English: as a Second Language

ESL (English as a Second Language) students who reach an intermediate level of English don't need endless drills in grammar or tedious vocabulary lists; they need to learn how to make their English sound natural. Fluent English is the ideal course for developing native-like fluency in English. It focuses on the essentials-idiomatic expressions, phrasal verbs, practical vocabulary expansion, and grammar usage in context-and builds listening comprehension as well as pronunciation and intonation skills.

Mathematical Methods for Physicists
George B. Arfken and Hans J. Weber

Through several editions, Arfken and Weber's best-selling Mathematical Methods for Physicists has provided upper-level undergraduate and graduate students with the paramount coverage of the mathematics necessary for advanced study in physics and engineering. It provides the essential mathematical methods that aspiring physicists are likely to encounter as students or beginning researchers. Appropriate for a physics service course, as well as for more advanced coursework, this is the book of choice in the field.

The Official Guide to the TOEFL

The Official Guide to the TOEFL Test (eBook): bestselling test-prep book from ETS with hundreds of tips, explanations and sample questions. The TOEFL test is the most widely respected English-language test in the world, recognized by more than 8,000 colleges, universities and agencies in more than 130 countries. Wherever you want to study, the TOEFL test can help you get there.

Origin, Graphs and plots! ... and fit!

Origin is a software application with tools for data analysis, publication-quality graphing, and programming.

Preparation Course for the TOEFL IBT

Preparation Course for the TOEFL® Test: Next Generation (IBT), a book/CD-ROM package written by Deborah Phillips, gives students all the tools they need to succeed on the new TOEFL® integrated-skills test.   Providing both a comprehensive language skills course and a wealth of practice for all sections of the test, the Preparation Course is appropriate for courses in TOEFL® Test preparation or as a supplement to more general English courses.