TY  - BOOK
AU  - Lauenroth W K Ed.
AU  -  Preston Eric M Ed.
TI  - Effects of S02 on a grassland: a case study in the Northern great plains of the United States
T2  - Ecological studies; 45
U1  - I:5:33E16160, M4 
PY  - 1984///
CY  - New York    
PB  -  Springer Verlag       
KW  -  Plant ecology
KW  - Botany
N1  - Bibliography 177-190p
ER  -