TY  - BOOK
T1  - Total and extractable selenium in soils from the Lake Andes- Wagner irrigation area, South Dakota
DA  - 1990.
CY  - [Denver, Colo.] :
AU  - Wilson, S. A.
VL  - 90-52
CN  - I 19.76:
PB  - U.S. Geological Survey,
PP  - [Denver, Colo.] :
PY  - 1990.
N1  - Cover title.
ID  - 263467
KW  - Soils
KW  - Selenium.
TI  - Total and extractable selenium in soils from the Lake Andes- Wagner irrigation area, South Dakota
ER  -