Science magazine - February 25, 2011

Science is a multi disciplinary, weekly peer reviewed journal, ranks as the world's most prestigious scientific journal. The journal was established by Thomas Edison in 1880 and has been the official journal of AAAS since 1900. Content includes original research, news, book reviews, and coverage of events in the scientific community.

Explaining English Grammar

This is a book designed to help teachers understand English grammar and explain it to their students. Each chapter focuses on a problematic area, for example 'Articles', 'Conditionals', and 'Direct and indirect speech', and includes exercises for the reader and teaching ideas.

Threatened swallowtail butterflies of the world: the IUCN red data book

The book is focused on the problems of conservation of sailfish (Papilionidae) of the World. It includes chapters on nomenclature, distribution and conservation status. An overview of modern information on 78 endangered species including a description of appearance, distribution, habitat and ecology. Annotated list of all types of sailing ships of the World includes information on their distribution. One chapter describes the trade in butterflies (with emphasis on sailing vessels), including estimates of annual turnover, information on countries of origin of the material law for 600 kinds of price ranges 

The Financier

The Financier, a novel by Theodore Dreiser, is the first volume of the Trilogy of Desire, which includes The Titan (1914) andThe Stoic (1947).

Exam Essentials CAE Practice Tests with Key(with CD)

Completely update for the new 2008 exam specification

CAE Practice Tests offer practice in all areas evaluated in the CAE exams. It also includes a wealth of support for both students and teachers.