Note 64 — Chapter XX · GEOLOGY AND ENGINEERING CONSTRUCTION
Reading edition
Excellent texts on this subject may be found in Military Geology and Topography, Herbert E. Gregory, Editor, prepared and issued under the auspices of Division of Geology and Geography, National Research Council, Yale Univ. Press, New Haven, 1918, and Engineering Geology, by H. Ries and T. L. Watson, Wiley and Sons, New York, 2d ed., 1915.