TY  - RPRT
TI  - Criteria and evaluation for two-step flush devices for water closets 
AU  - Winter, Fred
AU  - Galowin, Lawrence S
PY  - 1981
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-2296
DO  - 10.6028/NBS.IR.81-2296
ER  -