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Author: Charlie Cooke
Photo size: 2.4 Mpixels (6.93 MB uncompressed) - 1661x1458 pixels (5.5x4.9 in / 14.1x12.3 cm at 300 ppi)
Photo keywords: 30 seconds, chemical tests, cocaine HCl, marquis test, Sam Drake, University of Derby
Published in: Chemical tests