I thought this was the grammar reference book, but it really is just the supplementary exercises. I can't quite believe I made this mistake. I thought I was buying a cheaper edition of "Advanced Grammar in Use with CD Rom" just without the CD, which I didn't want. But it's literally a supplementary book, only with exercises -no grammar explanations. Definitely not what I was looking for.
The mistake was mine, (the clue's in the title of the book -duh!) but I thought I'd review this to help steer others away from making the same mistake. This book's got exactly the same cover as its "fuller friend", for goodness' sake!
As for the content of the book itself -if you're looking for a book to practise advanced level English grammar (without any grammar explanations) then it's OK. I'd give it three stars.