TY - RPRT TI - Legibility of alphanumeric characters and other symbols I. A permuted title index and bibiography/ AU - Rose, F C AU - Cornog, D Y PY - 1964 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NBS MP 262-1 DO - 10.6028/NBS.MP.262-1 ER -