recently I was happy as I just got 3 new books on physics,I got them with special price!!!there r:Problems n solutions on Quantum Mechanics(is a collection of questions on QM of major US universities--MIT,Princeton,Berkely,Wisconsin and Chicago.)then my favourite hero,John S.Bell book on the interpretation of QM,last one is recommend by Chng chi n Kean Loon---the classic MIT EM textbook--J.Jackson Classical Electrodynamics.So happy although spend over 120 dollars on them!!!