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2. Geology of Torquay;Ussher;Mem. Geol. Surv.,1903
3. Geology of Newton Abbot;Ussher;Mem. Geol. Surv.,1913
4. A Composite Sill at Newton Abbot;Shannon;Quart.. Journ Geol. Soc.,1922
5. The Petrography and Correlation of the Igneous Rocks of Torquay Promontory;Shannon;Geol. Mag.,1924