CERTAIN DISTANCE, A

Duration: 29 min

Year Published: 1970

Creator: Department of Agriculture

Color: Color

Sound: Optical sound

Description: Covers bark beetle damage in South Dakota, range inventory in Colorado, smog damage to forests in California, and forest inventory in the Mississippi Valley using initial photos from the Apollo IX space orbit. The film can also be useful in a general introduction to the subject of remote sensing from airplanes.