The Development and testing of a highly directional dual-mode electronic siren
By: 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.
Contributors: Fisher, Ronald L.; National Institute of Law Enforcement and Criminal Justice.; Law Enforcement Standards Laboratory.
Series: Law enforcement equipment technology; NBS special publication ; 480-28; NBS special publication ;; 480-28.
Publisher: U.S. Dept. of Commerce, National Bureau of Standards
Published: 1978
Place of publication: Washington
Language: eng
Number of pages: 43
Subjects: Sirens (Signaling devices) -- Testing.
Notes: Bibliography: p. 29.