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This books is an excellent revision/practice for Biology AS/A -levels. Most topics are covered in this book. I could have given it a 5 star butbecause it was missing the options bit of Unit 4 edexcel i decided to giveit 4. Overall qood book
Really useful practice questions, including pictures of cells, diagrams to label, etc. I found it especially helpful to be answering questions where the diagrams were different to the text book, and topics approached slightly differently, since this it was good practice for the exam.