TY - GEN AU - J Archea AU - Belinda Collins AU - F Stahl C2 - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD DA - 1979-05-15 DO - https://doi.org/10.6028/Nbs.bss.120 LA - en PB - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD PY - 1979 TI - Guidelines for Stair Safety ER -