Norristown metropolitan area traffic survey
By: Commonwealth of Pennsylvania Department of Highways, Planning and Traffic Division ; in cooperation with the Bureau of Public Roads, U.S. Department of Commerce
Contributors: United States. Bureau of Public Roads
Publisher: Pennsylvania Department of Highways
Published: 1950
Place of publication: Harrisburg, Pa.]
Language: eng
Subjects: Origin and destination traffic surveys
Notes: Cover title: Norristown traffic survey.