Dirty money: an investigation into the hygiene status of some of the world's currencies as obtained from food outlets von Vriesekoop, F, Russel, C, Alvarez-Mayorga, B, Aidoo, K, Yuan, Q, Scannell, A, Beumer, R.R, Jiang, X, Barro, N, Otokunefor, K, Smith-Arnold, C, Heap, A, Chen, J, Iturriage, M.H, Hazeleger, W.C, DesLandes, J, Kinley, B, Wilson, K, Menz, G

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