TY  - BOOK
ED  - E.U.A. Environmental Protection Agency
TI  - Diagnosing vegetation injury caused by air pollution
U1  - 581.5 
PY  - 1976///
CY  - (s.l.)
PB  - The Agency
KW  - Aire
KW  - Contaminacion
KW  - Efecto en plantas
ER  -