TY  - RPRT
TI  - Onsite wastewater systems -- Current practices and a proposed basis for evaluation 
AU  - Winter, Fred
PY  - 1981
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-2210
DO  - 10.6028/NBS.IR.81-2210
ER  -