TY  - RPRT
TI  - Letter Circular 1079: home security alarms - what they are and how they work
PY  - 1977
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 1079
DO  - 10.6028/NBS.LCIRC.1079
ER  -