Edexcel AS/A-level Geography Student Guide 1: Tectonic Processes and Hazards … – Cameron Dunn – Google Books

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https://books.google.co.uk/books?id=T4kkDAAAQBAJ&printsec=frontcover&dq=edexcel+a+level+geography&hl=en&sa=X&ved=0ahUKEwjcsvjZ9rrZAhXSL1AKHSBWD_UQ6AEIRDAF#v=onepage&q=Areal%20extent%20of%20hazard&f=false