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|WikiProject Economics||(Rated Start-class, Mid-importance)|
i want to know what is just noticable difference and how it can be used.
I have removed the following until the author collects his/her thoughts:
- Vertical Differentiation vs Horizontal Differentiation
- Vertical differentiation is...
- Horizontal differentiation is...
mydogategodshat 18:57, 6 October 2005 (UTC)