

OF 
YORKSHIRE GEOLOGY 
1534—1914. 
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This forms Volume XVIII. of the Proceedings of the Yorkshire 
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sections, published between 1534 and 1914. In its preparation over 
700 sets of Scientific Journals, Reports, Transactions and Magazines 
have been examined. There is an elaborate index containing over 
26,500 references to subjects, authors and localities. 
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