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Total number of records: 3
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The geology of Middlesex and Hertfordshire
Hopkinson, John (1844-1919); Geologists' Association
1909
"Reprinted from the jubilee volume of the Geologists' Association, part I, issued October 29th, 1909".
List of works on the geology of Hertfordshire, 1874-83
Hopkinson, John (1844-1919)
[1885]
"Fronm the 'Transactions of the Hertfordshire Natural History Society,' vol. III, part 5, June, 1885".
Excursion to Ayot Green and Hatfield Hyde : Saturday, May 14th, 1898
Hopkinson, John (1844-1919); Salter, A E
[1898]
"Reprinted from the Proceedings of the Geologists' Association, vol. xv, part 8, July, 1898".