Title :
Aerial photo-interprctation for soil surveys
Author Statement :
by J. Bennema and H. F. Gelens
Collation :
[88] p.: ill.
Subject :
Aerial photography in soil surveys
ADDED ENTRIES :
Gelens, H. F.
SubTitle :
: lecture notes I. T. C. courses photo-interprctation in soil surveying
Biblography :
Includes bibliography
