TY - GEN AU - Berger, Harold AU - Mordfin, Leonard C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1981-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.82-2449 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1981 TI - Technical activities 1981 Office of Nondestructive Evaluation: ER -