The Development and testing of a highly directional dual-mode electronic siren /
prepared for National Institute of Law Enforcement and Criminal Justice, Law Enforcement Assistance Administration by R.L. Fisher ... [et al.] ; and Law Enforcement Standards Laboratory.
|Related Names:||Fisher, Ronald L.|
Washington : U.S. Dept. of Commerce, National Bureau of Standards, 1978.
Sirens (Signaling devices)
Sirens (Signaling devices) /
viii, 43 p. :
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