TY - RPRT TI - The testing of laminates and synthetic papers as currency substrates AU - Pummer, Walter J AU - Toth-Debelius, Elizabeth E AU - Wang, Francis W PY - 1984 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 84-2951 DO - 10.6028/NBS.IR.84-2951 ER -