TY  - RPRT
TI  - Land use and land cover, 1972-76, Grand Rapids, Michigan
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1981
DO  - 10.3133/l187
UR  - https://pubs.usgs.gov/publication/l187
ID  - l187
ER  -