- The Mathematical Writings of Duncan Farquharson Gregory by William Walton, Robert Leslie Ellis, et all 2010-03-04
- A treatise on the application of analysis to solid geometry: Commenced by D. F. Gregory, concluded by W. Walton by Duncan Farquharson Gregory, 1852-01-01
- A Treatise On the Application of Analysis to Solid Geometry, Commenced by D.F. Gregory, Concluded by W. Walton by William Walton, Duncan Farquharson Gregory, 2010-04-22
- Dollfuss and his times / by J. D. Gregory ; with 31 illustrations and 8 maps by John Duncan Gregory, 1935
- Dick Donnelly of the Paratroops by Gregory Duncan, 1944
- The Cambridge and Dublin Mathematical Journal, Volume 2 by Norman Macleod Ferrers, Robert Leslie Ellis, et all 2010-03-04
- Examples of the Processes of the Differential and Integral Calculus by Duncan Farquharson Gregory, 2010-02-09
- March Anson and Scoot Bailey of the U. S. Navy by Gregory Duncan, 1944-01-01
- On the edge of diplomacy: Rambles and reflections, 1902-1928, by John Duncan Gregory, 1929
- The Mathematical Writings Of Duncan Farquharson Gregory by Duncan F. Gregory, 2010-09-10
- The Mathematical Writings Of Duncan Farquharson Gregory by Duncan F. Gregory, 2010-09-10
- Ethics and Economics: Canada's Catholic Bishops on the Economic Crisis (The Canadian issues series) by Gregory Baum, Duncan Cameron, 1984-01-01
- Dick Donnelly of the Paratroops (Fighters for Freedom Series #2307) by Gregory Duncan, 1944
- A Treatise On The Application Of Analysis To Solid Geometry by Duncan F. Gregory, William Walton, 2007-07-25
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