TY - RPRT TI - LEAA police equipment survey of 1972, volume 1 : the need for standards AU - Ku, R AU - Bunten, E AU - Klaus, P PY - 1977 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS SP 480-1 DO - 10.6028/NBS.SP.480-1 ER -