Cambridge International AS & A Level Further Mathematics supports students following the 9231 syllabus. This single coursebook comprehensively covers all four modules of the syllabus and helps support students in their studies and develops their mathematical skills. Authored by experienced teachers of Further Mathematics, the coursebook provides detailed explanations and clear worked examples with practice exercises and exam-style questions. Answers are at the back of the book.

Established in 1905, The Forest Service is steeped in history, conflict, strong personalities (including Theodore Roosevelt and Gifford Pinchot), and the challenges of managing 193 million acres of national forests and grasslands. This unique federal agency is one that combines forest management with wildlife, fish, recreation, mining, grazing, and hundreds of other uses. It operates in the midst of controversy and change. The original intent was to protect the public forests, protect the water supplies, and, when appropriate, provide timber. Much has changed over the last 100 years including many new laws, but the fact that these lands are still fought over today shows the foresight of politicians, foresters, scientists, and communities. This work brings to light the many and varied activities of the agency that many people know little about in a world that is constantly changing. Written by a former Forest Service national historian, topics discussed in the work include wilderness and the Wilderness Act of 1964, recreation battles and interagency rivalry with the National Park Service, timber management including clearcutting, ecosystem management, roadless area and controversies over RARE and RARE II studies, fish and wildlife management including endangered species before and after the Endangered Species Act of 1973, and mining and the General Mining Act of 1872. It also discusses the future challenges: forest fires, water protection and restoration, recreation, involving the public, and fish and wildlife.