TY - JOUR AU - M Manahan AU - Christopher McCowan AU - Thomas Siewert AU - J Holt C2 - Astm Standardization News DA - 1999-02-01 00:02:00 LA - en M1 - 27 PB - Astm Standardization News PY - 1999 TI - For 100 Years, Notched Bar Impact Testing Standards Have Yielded Widespread Benefits for Industry ER -