I think if any lecturers here assigned a problem set from a particular textbook (that the library didn't have enough of) without either photocopying it or putti

I think if any lecturers here assigned a problem set from a particular textbook (that the library didn't have enough of) without either photocopying it or putting up pdfs, conscientious students would complain to the students union about the lecturer, others just wouldn't bother doing the assignment. (Actually, in practice, tutors would just give out copies to their own tutorial group). As someone doing a humanities subject, our textbooks don't have problem questions, they're just textbooks. But even for subjects like maths, the lecturers generally have their own set of questions rather than using textbook ones (usually with only minor changes from the ones used by whoever lectured that course last year) and put them online - e.g. http://www.damtp.cam.ac.uk/user/examples/ http://www.damtp.cam.ac.uk/user/examples/