TY  - RPRT
TI  - Atlas of urban and regional change, greater Pittsburgh region, Pennsylvania; A. Land use (Level II), 1973
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1976
DO  - 10.3133/ofr7528a
UR  - https://pubs.usgs.gov/publication/ofr7528A
ID  - ofr7528A
ER  -