TY  - BOOK
T1  - Work plan for regional reconnaissance for selected herbicides and nitrate in ground water of the mid-continent United States, 1991
DA  - 1991.
CY  - Iowa City, Iowa :
CY  - Denver, Colo. :
AU  - Kolpin, Dana W.
AU  - Burkart, M. R.
VL  - 91-59
CN  - I 19.76:
PB  - U.S. Geological Survey ;
PB  - Books and Open-File Reports [distributor],
PP  - Iowa City, Iowa :
PP  - Denver, Colo. :
PY  - 1991.
N1  - Distributed to depository libraries in microfiche.
N1  - Shipping list no.: 92-0531-M.
ID  - 200782
KW  - Water quality
KW  - Water
TI  - Work plan for regional reconnaissance for selected herbicides and nitrate in ground water of the mid-continent United States, 1991
ER  -