TY  - RPRT
TI  - Letter Circular 608: detergents and related subjects (superseding Letter Circular 403)
PY  - 1940
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 608
DO  - 10.6028/NBS.LCIRC.608
ER  -