Georg Agricola in General Books LLC (2010-03-25)
Book 1
Claude Allègre in Harvard University Press (1994-03-15)
Book 1
Elizabeth Cabot Cary Agassiz, Louis Agassiz in British Library, Historical Print Editions (2011-03-27)
Book 2
Archibald Geikie in BiblioLife (2009-02)
Book 1
Joseph Barrell in Bulletin of the Geological Society of America (1917)
Journal Article 1
Emile Argand in Hafner (1924)
Book 2
Derek Victor Ager in John Wiley & Sons Inc (1993-03)
Book 1
Sir Archibald Geikie in Nature (1895)
Journal Article 1
