TY  - JOUR
PY  - 1964//
TI  - The Efficiency of 2 Dimensional Traffic Markers in Referring Commands
JO  - Human factors
A1  - Nelson, Thomas M.
SP  - 359
EP  - 364
VL  - 6
IS  - 4
N2  - [Abstract unavailable]    <p>Language: en<a href="index.php?fuseaction=journalarticles.editarticle&amp;journalArticleId=81743"></a></p>
LA  - en
SN  - 0018-7208
UR  - http://dx.doi.org/
ID  - ref1
ER  -