Unfortunately, I have just learned that the course book that
we used to have on the course is presently out of print. No new edition is
planned by the publishers.
I still recommend the book for supplementary reading. You might
find copies in the main University library and also at the library of the
Physics Department and/or at Theoretical Physics.
It is good for the future to have a reference book on Group
Theory. As such I recommend the book by Morton Hamermesh, Group Theory
and its Application to Physical problems, because it is a good
book, and a standard book and it is issued by Dover Publ. and is thus relatively
cheap.