TY - GEN AU - Robinson, Donald C C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1975-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.75-647 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1975 TI - Mechanical tests of FAA-E-2491 airport in-pavement approach and threshold lights: ER -