Perhaps in these austere times, Mr Gradgrind from Hard Times would demand we weigh up the bare facts to compare this revised fifth version of the Northern England volume of the British Regional Geology series. The new edition has 294 pages compared to the 132 of the fourth edition published in 1971. The new edition is filled with colour diagrams, photographs and maps and retails for £18. While the fourth edition sold for 40p in 1971, the cheapest copy I could find online was £2.75 and you could easily pay over £10. By using the website Measuring Worth (

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