@misc{indiciaed21f7a6b48c6, title = {Design and documentation of a Baltimore-Washington regional spatial database testbed for environmental model calibration and verification}, author = {Timothy W. Foresman and Helen Wiggins and Dana Porter and Penny Masuoka and William Acevedo}, year = {1996}, url = {https://pubs.usgs.gov/publication/70202459}, note = {Source identifier: 70202459} }