. . . "A Practical Manual for the Lay Student of Color"@en . . . . . "Color Problems"@en . "6354821" . . . "Color Problems"@en . . . . . . . "Color Problems"@en . . . . . "Color Problems"@en . "1902 edition"@en . . . . . . . . . . "colorproblemspra00vand_0" . "012241575" . "ND1280 .V3" . . . . "Color Problems (Vanderpoel, 1901)" . . "1902-01-01T00:00:00Z"^^ . .