TY - GEN AU - Yonemura, Gary C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1981-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.1143 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1981 TI - Visual acuity testing of radiographic inspectors in nondestructive inspection: ER -