TY - RPRT TI - LEAA police equipment survey of 1972, volume II : communications equipment and supplies AU - Mumford, S AU - Klaus, P AU - Bunten, E AU - Cunitz, R PY - 1977 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS SP 480-2 DO - 10.6028/NBS.SP.480-2 ER -