Steve Langfield

Collins IGCSE Essentials - Edexcel International GCSE Chemistry: Revision Guide

By Steve Langfield, Alison Wright, Dan Evans

Essentials of GCSE OCR Science for Specification B: GCSE OCR Science B (Gateway Science)

By Jacqui Punter, Robert Johnson, Steve Langfield

Revision plus OCR B (Gateway Science) Workbook (Lonsdale GCSE Revision Plus)

By Jacqui Punter, Robert Johnson, Steve Langfield

Revision Plus OCR Additional Science B(Gateway Science) Revision guide (OCR Science Revision): GCSE OCR Additional Science B (Gateway Science) (Lonsdale GCSE Revision Plus)

By Jacqui Punter, Robert Johnson, Steve Langfield

Revision Plus GCSE OCR Additional Science B Workbook: Gateway Science (Revision Plus OCR Additional Applied Science B (Lonsdale GCSE Revision Plus)

By Jaqui Punter, Robert Johnson, Steve Langfield

Lonsdale GCSE Essentials - OCR Gateway Chemistry: revision Guide (2012 Exams Only): OCR Gateway Chemistry Essentials

By Steve Langfield

OCR Gateway Additional Science B: Exam Practice Workbook

By Tom Adams, Steve Langfield, Sam Holyman, Claire Hutchinson