Some psychophysical tests of the conspicuities of emergency vehicle warning lights /
| Main Author: | |
|---|---|
| Corporate Authors: | , |
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Washington] :
The Bureau : For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
1979
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| Series: | NBS special publication ;
480-36 |
| Subjects: |