Cambridge Natural Science Mannuals - Petrology for Students - an Introduction to the Study of Rocks under the MicroscopeAlfred Harker · First published 2009Open the Tome
The geology of the small isles of Inverness-shire (Rum, Canna, Eigg, Muck, etc) (Sheet 60, Scotland)Alfred Harker · First published 1908Open the Tome
The Bala volcanic series of Caernarvonshire and associated rocksHarker, Alfred · First published 1889Open the Tome
