NASA NTRS · 19700069753
The earth resources technology satellites /ERTS/ system
Abstract
Earth Resources Technology Satellites /ERTS/ providing high resolution image data regarding agriculture, geology, hydrology, geography, etc
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Ragland, T. M., Scull, W. E.. 1970-10-01. The earth resources technology satellites /ERTS/ system. https://ntrs.nasa.gov/citations/19700069753
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