TY  - GEN
AU  - Fechter, John V
AU  - Pezoldt, Valom J
AU  - Persensky, J J
AU  - Lepkowski, J Richard
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1975-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.IR.75-777
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1975
TI  - Study of the national standards for directional and other official signs ::overview of their adequacy
ER  -