Produced in partnership with OCR for the 2008 OCR A Level Chemistry A specification, this Revision Guide complements the AS Student Book and provides students with that extra help they need for exam preparation. Written by experienced examiners and teachers, the OCR AS Chemistry A Revision Guide ...
网址：http://www.physicsandmathstutor.com revisionworld 专门做GCSE和A-level复习，学科资料比较全，...
Physics and math tutor上有，自己去下载