TY - GEN AU - Hales, J.M. AU - Hicks, B.B AU - Miller, J.M. TI - Role of research measurement networks as contributors to federal assessments of acid deposition KW - POLUIÇAO ATMOSFERICA KW - CHUVAS ACIDAS KW - EUA KW - 551.501.9 KW - med KW - fre KW - 551.510.42vmed ER -