Selected water-quality characteristics in the upper Mississippi River basin, Royalton to Hastings, Minnesota
1998 ◽
2012 ◽
Vol 46
(16)
◽
pp. 9174-9182
◽
2007 ◽
Vol 6
(2)
◽
pp. 187-196
◽
1998 ◽
1997 ◽