AERIAL PHOTOGRAPHIC INVESTIGATION OF 
LEACHING AND SAPPING AS AN EROSION PROCESS* 
This paper is part of the 1960 program of Commission VII (Photographic 
Interpretation) of the International Society of Photogrammetry, and is 
submitted by the Commission's Working Group 3, 
"Surface Configuration, Drainage, Soils, Geology". 
Frank H. McBeth, Cartographer 
U.S.N. Hydrographic Office 
  
*The opinions or assertions contained herein are not to be construed as being of- 
ficially endorsed by the U.S. Navy Hydrographic Office or the Navy Department.