Census tracts, 1970, Washington urban area : D.C., Md., and Va. /

Bibliographic Details
Corporate Authors:	Geological Survey (U.S.), United States. National Aeronautics and Space Administration
Other Authors:	Wray, James R.
Format:	Government Document Map
Language:	English
Published:	Washington : The Survey, 1973.
Series:	Its Misc. Investigation Series, I-858-C
Subjects:	Census districts > Washington Metropolitan Area > Maps. Washington Metropolitan Area > Remote-sensing maps. Washington Metropolitan Area > Administrative and political divisions > Maps.

Description
Item Description:	"This map is one prototype product of experiments in land use change detection using remote sensors abroad aircraft and Earth-orbiting satellites." Includes "Census cities experiment in urban change detection, James R. Wray, principal investigator." Cartographic material.
Physical Description:	1 map : color ; 60 x 60 cm.