An Introduction to Homological Algebra (Cambridge Studies in Advanced Mathematics)
"It is...the ideal text for the working mathematician need- ing a detailed description of the fundamentals of the subject as it exists and is used today; the author has succeeded brilliantly in his avowed intention to break down 'the technological barriers between casual users and experts'."   Kenneth A. Brown, Mathematical Reviews"By collecting, organizing, and presenting both the old and the new in homological algebra, Weibel has performed a valuable service.  He has written a book that I am happy to have in my library."   Joseph Rotman, Bulletin of the American Mathematical Society