What book can you use for 7Circles

Hi I was wondering if there is a book someone could recommend for seven circles chess training,which is a continuous cycle of a thousand problems that you have to do over and over again until it sticks in your head.

It doesn't have to be a thousand problems something like 400 -500 would be ok.

Also I wouldn't want any book which contains one move checkmates like the Polgar book ,only something suitable for my level.

Winning Chess Tactics for Juniors by Lou Hays is pretty good. It has over 500 problems with 2-3 move solutions. The problems are sorted by theme, but there is also a chapter on mixed themes.

Hi I managed to find this book on the internet free  saigonsouth.net/Documents/bk%20tactics%20for%20juniors.pdf