TY  - GEN
AU  - Popp, Carl J.
AU  - 
TI  - Acidic precipitation in western North America: trends, sources, and altitude effects in New Mexico, 1979-1985
KW  - TENDENCIAS DA ACIDEZ DA PRECIPITAÇAO
KW  - U.S.A
KW  - 551.577.13
KW  - 551.510.42(789)
KW  - med
KW  - fre
ER  -