Guest Book - حسام - 02/09/2008

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Name:   حسام
E-Mail:   h_30.2008 at hotmail.com
Web Page:   yhttedhh
Location:   89ghjklkk
Birth Year:   1970
Gender:   Male
Comments:   good
Fortune:   Weber-Fechner Law The least change in stimulus necessary to produce a perceptible change in response is proportional to the stimulus already existing.


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