@article{225701, recid = {225701}, title = {An assessment of seismic monitoring in the United States : requirement for an advanced national seismic system /}, publisher = {U.S. Geological Survey,}, address = {Denver :}, pages = {iii, 55 p. :}, year = {2000}, note = {Shipping list no.: 2000-0061-P.}, url = {http://library.usi.edu/record/225701}, }