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Benson, Optical properties
P1921996-22
P1921996-21
P1821607-13
P1821607-14
P1821607-8
P1821607-7
P1821607-6
P1821607-5
P1821607-4
P1821607-3
P1821607-2
P1821607-15
P1822399-7
P1822399-4