TY - RPRT TI - Automobile tire sounds - acoustical grading system feasibility: 1. endurance wheel study AU - Rubin, Arthur I AU - Fisher, Ronald L AU - Forrer, John S PY - 1970 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 10292 DO - 10.6028/NBS.RPT.10292 ER -