Cover image for Ratio of workers working in county to workers residing in county in the United States: 1970.
Ratio of workers working in county to workers residing in county in the United States: 1970.
Title:
Ratio of workers working in county to workers residing in county in the United States: 1970.
Author:
United States. Bureau of the Census.
Publication Information:
Washington : U.S. Govt. Print. Off., 1971.
Physical Description:
color map ; 66 x 99 cm.
General Note:
"Albers equal area projection; standard parallels 29 1/2⁰ and 45 1/2⁰."

Includes insets of Hawaii and Alaska.
Language:
English