00420cam a22001097a 4500 180718b1965 xxu||||| |||| 00| 0 eng d X811x42 Un3 Operation and management of small sewage works by Ministry of Housing and Local Government, United Kingdom London Her Majesty's Stationery Office 1965 ix, 69p United Kingdom. Ministry of Housing and Local Government 414552 414552 0 0 0 0 IIPA IIPA 2009-02-25 X811x42 Un3 DA67 2018-07-21 2018-07-21 DA