Escritt, L.B.
Sewers and sewage works : with metric calculations and formulae by L.B. Escritt - London George Allen & unwin 1971 - 256p
Sewerage.
Sewage --Purification
X81 Es18
Sewers and sewage works : with metric calculations and formulae by L.B. Escritt - London George Allen & unwin 1971 - 256p
Sewerage.
Sewage --Purification
X81 Es18
