The Ishihara`s Tests for Colour Deficiency consist of four (4)different types, namely, 24-plates (Abridged) Edition used principally at factories and offices of transportation and other concerned places of the purpose of conducting usual sample survey for colour deficiency in a short space of time when hiring new employees.
The Ishihara`s Tests for Colour Deficiency consist of four (4)different types, namely, 24-plates (Abridged) Edition used principally at factories and offices of transportation and other concerned places of the purpose of conducting usual sample survey for colour deficiency in a short space of time when hiring new employees.ishihara colour blind eye test book
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