TY - GEN AU - Gladys White Grodstein C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1957-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CIRC.583 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1957 TI - Circular of the Bureau of Standards no. 583::x-ray attenuation from 10 kev to 100 Mev ER -