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Aerial Photos Essential In Making Soil Surveys
A soil scientist explains how aerial photographs taken at 12 500 feet help map soils. Overlaps and stereoscopes reveal elevations and boundaries, guiding field work in Augusta Clarke Warren and Shenandoah counties with 70 000 soils in the national system and cooperative state efforts.
MENTIONED IN THIS ARTICLE
Frederick
Clarke
Warren
Shenandoah J
Agronomy
V.P.I
National Cooperative Soil Survey
Virginia
Augusta County
Soil Conservation Service
Virginia Agr
Robert Modessit