Accession Number : AD0493471

Title :   AN ESSAY KEY FOR THE PHOTOIDENTIFICATION OF FARM CROPS AT SEVERAL INTERVALS DURING THE GROWING SEASON IN NORTHERN ILLINOIS.

Descriptive Note : Technical rept.,

Corporate Author : NORTHWESTERN UNIV EVANSTON IL DEPT OF GEOGRAPHY

Personal Author(s) : Kohn, Clyde F.

Report Date : DEC 1952

Pagination or Media Count : 40

Descriptors :   (*PHOTOINTERPRETATION KEYS, AGRICULTURE), RURAL AREAS, TERRAIN, AERIAL PHOTOGRAPHY, STEREOPHOTOGRAPHY, PHOTOGRAPHIC TEXTURE, PHOTOGRAPHIC TONE, PATTERN RECOGNITION, SOILS, PLANTS(BOTANY), GRASSES, PHOTOINTERPRETATION, ILLINOIS.

Subject Categories : Cartography and Aerial Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE