At the dawn of the great ice age, a group of three animals embark upon an epic journey. Sid the sloth, Manfred the mammal, and Diego the sabre-toothed tiger team up to help return a human baby to its father, and must risk life and limb as they traverse boiling lava pits and travel through dangerous ice caves to complete their mission. Along the way they also meet Scrat, a squirrel-rat determined to plant an acorn in a glacier. Features the voices of John Leguizamo, Denis Leary and Jack Black.

Algorithmic graph theory has been expanding at an extremely rapid rate since the middle of the twentieth century, in parallel with the growth of computer science and the accompanying utilization of computers, where efficient algorithms have been a prime goal. This book presents material on developments on graph algorithms and related concepts that will be of value to both mathematicians and computer scientists, at a level suitable for graduate students, researchers and instructors. The fifteen expository chapters, written by acknowledged international experts on their subjects, focus on the application of algorithms to solve particular problems. All chapters were carefully edited to enhance readability and standardize the chapter structure as well as the terminology and notation. The editors provide basic background material in graph theory, and a chapter written by the book's Academic Consultant, Martin Charles Golumbic (University of Haifa, Israel), provides background material on algorithms as connected with graph theory.

The Workbook contains a wide variety of review and practice exercises and covers all of the language areas in the corresponding Students' Book unit. It also contains regular review sections to help learners consolidate what they have learned. Pre-Intermediate: Global Scale of English 36-46

The Workbook provides additional grammar, vocabulary and pronunciation practice and extends reading, listening and writing skills.