TY  - RPRT
TI  - Letter Circular 987: color harmony:ban annotated bibliography (supersedes Letter Circular 525)
PY  - 1950
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 987
DO  - 10.6028/NBS.LCIRC.987
ER  -