Download or read book Ocr Additional Science B Essential Revis written by and published by . This book was released on 2007-08 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A student-friendly approach to revision. This revision guide provides concise coverage of the GCSE OCR Gateway Additional Science specification. The guide offers a student-friendly approach to the core content with succinct notes and practice questions that focus on the essential content needed for the exams.