| http://www.w3.org/ns/prov#value | - Energy ASMethod for stratified construction and heating a grass pitch, particularly a football ground, and a grass playing field built up in accordance with the methodUS6450731Jul 24, 2000Sep 17, 2002William W. BohnhoffSystem for applying a liquid, such as a deicing liquid, upon a pavement surfaceUS6532697Dec 31, 2001Mar 18, 2003Michael A. EganProduction of sod using a soil-less sand based root zo
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