TY  - RPRT
TI  - Technical profile of seven data element dictionarydirectory systems 
AU  - Leong-Hong, Belkis
AU  - Marron, Beatrice
PY  - 1977
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS SP 500-3
DO  - 10.6028/NBS.SP.500-3
ER  -