31. Some of the ways that organizations use value propositions include in marketing communications material or in sales proposals. 32. In summary, different concepts of use value lead to different interpretations and explanations of trade, commerce and capitalism. 33. According to Marx, labour process refers to the process whereby labour is materialized or objectified in use values . 34. Calculation in kind would value each commodity based only on its use value , for purposes of economic accounting. 35. Together with the existence value, it makes up the non-use value of such an environmental service or good. 36. It especially singled out people illegally using value -added tax rebate forms, which are mostly reserved for export businesses. 37. Others argue about the methodology as some districts are using value added models to determine the effectiveness to teachers. 38. Cost and profitability reporting is achieved using Value Stream Costing, a simple summary direct costing of the value streams. 39. In general, it is not possible to use market prices or other revealed preference methods to measure non-use value . 40. Using values above 128 conflicts with using the 8th bit as a checksum, but the checksum usage gradually died out.