Items where Subject is "Natural resources and environment > Ecology > Plants"

1997

(1997) Big trees of Iowa,1997. Natural Resources, Department of

2002

(2002) For Land’s Sake, February 2002. Natural Resources, Department of

(2002) Strip Tillage Effects on Crop Production and Soil Erosion, 2002. Agriculture and Land Stewardship

21 August 2003

(2003) Iowa's Living Roadway Plant Profiler, August 21, 2003. Transportation, Department of

15 April 2004

(2004) Roadside Vegetation, April 15, 2004. Transportation, Department of

October 2005

(2005) Garlic mustard, alliara petiolata. A serious threat to Iowa's woodlands. Natural Resources, Department of