TY - BOOK AU - Watson, John G. CN - EP 4.8: CY - Research Triangle Park, NC : DA - [1997] ID - 222812 KW - Air quality monitoring stations KW - Air N1 - Shipping list no.: 99-0855-M. PB - U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, PP - Research Triangle Park, NC : PY - [1997] T1 - Guidance for network design and optimum site exposure for PM₂.₅and PM₁₀ TI - Guidance for network design and optimum site exposure for PM₂.₅and PM₁₀ ER -