Polycarbonate is great, but...
Wittenberg
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D005131:Eye Injuries / Q000517:prevention & control; D005135:Eye Protective Devices / Q000592:standards; D005139:Eyeglasses / Q000592:standards; D005898:Glass; D006801:Humans; D008422:Materials Testing; D009907:Optometry / Q000592:standards; D010969:Plastics; D011076:Polycarboxylate Cement; D012449:Safety
D010969:Plastics; D011076:Polycarboxylate Cement; C005506:polycarbonate