共 26 条
[21]
*US EPA, 1981, REV NAT AMB AIR QUAL
[23]
WOLFF GT, 1979, GMR3050 GEN MOT RES, P1
[24]
YORTY RA, 1983, THESIS U COLORADO BO
[25]
1983, J AIR POLLUTION CONT, V33, P608
[26]
1983, FED REG, V48, P3114