| http://www.w3.org/ns/prov#value | - Such a color test can be done in 5 minutes; rather than requiring that blood be drawn and sent to laboratories and the like, the only equipment required is a sheet of paper, a pen, and eight pages with L??scher's copyrighted colors on them.His discoveries were sufficiently interesting enough for him to be invited to be a speaker at the first International Congress of Psychology to meet after the S
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