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A collection of 9 number-coded specimens that allow students to study the response of minerals to long-wave ultraviolet rays. Set includes identification key and compartmented tray. Specimens measure approximately 1 to 1-1/2".
A collection of 9 number-coded specimens that allow students to study the response of minerals to long-wave ultraviolet rays. Set includes identification key and compartmented tray. Specimens measure approximately 1 to 1-1/2".
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