Conservation practices
Conservation practices for protecting water quality near Red Rock Lake in central Iowa. (USDA Natural Resources Conservation Service)
This image appears in the following article:
Conservation practices
[1]
Source URL:
http://www.ipm.iastate.edu/ipm/icm//ipm/icm/node/236
Links:
[1] http://www.ipm.iastate.edu/ipm/icm/2005/10-10/conserve.html
