TY  - SER
AU  - L.,R..
TI  - Self-flushing sewers : : Unique engineering gave ancient greeks a Maintenance-free waterworks
T2  - Discovering Archaeology ; 
PY  - 1999///
CY  - Oregon-XXU : 
PB  - The Leach Publishing Group, 
N1  - Research & News
ER  -