The Frequency-Distribution of Igneous Rocks

W. Alfred Richardson and G. Sneesby
Lecturer in Petrology, University College, Nottingham
Advanced Student, University College, Nottingham

Mineralogical Magazine; June 1922 v. 19; no. 97; p. 303-313; DOI: 10.1180/minmag.1922.019.97.02
© 1922, The Mineralogical Society
Mineralogical Society (www.minersoc.org)