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Soil test
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==External links== * [http://www.epa.gov/ebtpages/pollsoilcontaminants.html Pollutants/Toxics > Soil Contaminants] * [http://www.epa.gov/superfund/students/clas_act/haz-ed/ff_09.htm Common Contaminants] * [http://www.ext.colostate.edu/pubs/Crops/00501.html Colorado State University Extension Service] * [https://web.archive.org/web/20090627132930/http://grass-roots.ca/soil_test_info/why_a_soil_test.php Mail-in soil test kits and nutrient management/fertilizer reports] * [https://purl.fdlp.gov/GPO/gpo41808 Field Book for Describing and Sampling Soils] {{soil science topics}} {{Geotechnical engineering}} {{Authority control}} [[Category:Soil tests| ]] [[Category:In situ geotechnical investigations]]
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