1. Work plan for the NCA/BCR Precipitation Quality Network;Bituminous Coal Research Inc.,1980
2. The space-time distribution of sulfate deposition in the northeastern United States;Bilonick;Atmospheric Environment,1985
3. Statistical assessment of data from the NCA Precipitation Quality Network: July 1982 through December 1983;Constantino,1984
4. NCA/BCR Precipitation Quality Network;DiNatale,1983