The Isolation of the Directions-Image of Small Objects

John William Evans

Lecturer in Petrology, Imperial College of Science and Technology, and Birkbeck College.

Mineralogical Magazine; November 1916 v. 18; no. 83; p. 45-51; DOI: 10.1180/minmag.1916.018.83.05
© 1916, The Mineralogical Society
Mineralogical Society (www.minersoc.org)