MIT Libraries logo

Search Constraints

Start Over
You searched for: Subject Boundaries Remove constraint Subject: Boundaries Subject Administrative and political divisions Remove constraint Subject: Administrative and political divisions Year 1990 Remove constraint Year: 1990
1 - 3 of 3
Number of results to display per page

Search Results

1. Counties: Russian River Watershed, California, 1990

1990. Circuit Rider Productions. This polygon dataset contains county boundaries and features (usually shorelines). The county outlines were digitized from 1:100,000 scale mylar US... Circuit Rider Productions.

2. County Boundaries of the United States, 1990

1990. Geological Survey (U.S.). This polygon shapefile portrays the 1990 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).

3. Provincial Boundaries: China, 1990

1990. China. Guo jia tong ji ju, Beijing Hua tong ren shi chang xin xi you xian ze ren gong si, Zhonghua di tu xue she, and University of Michigan. China Data Center. This polygon dataset represents provincial boundaries in China from 1990. These data were primarily based on the "The Administrative Maps of the Pe... University of Michigan. China Data Center.