WORKING GROUP 6 
ICE 
D. Landen Photo Interpretation of Ice and Snow Features in the 
Antarctic 366 
V. I. Avgevich Some Results of the Interpretation of Aerial Photographs of 
Sea Ice, and Prospects of further Development of Aerial 
Surveys for the Study of Ice 374 
R. D. Leighty Engineering Information of Arctic Areas Obtained from 
Aerial Imagery 383 
R. W. Popham The Use of Satellites for Ice Studies 390