Catalog Record: The Development and testing of a highly directional dual-mode electronic siren | HathiTrust Digital Library

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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.

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Related Names: Fisher, Ronald L.
Language(s): English
Published: Washington : U.S. Dept. of Commerce, National Bureau of Standards, 1978.
Subjects: Sirens (Signaling devices) > Sirens (Signaling devices) / Testing.
Physical Description: viii, 43 p. : ill. ; 27 cm.
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