@base . a , ; "Annual report of the Sewage and Waste Treatment Division, Bureau of Engineering, Department of Public Works, City and County of San Francisco" . a . a ; "0096-9834" ; . a ; "0096-9834" ; . a ; . a ; ; "20050912132800.0"^^ ; ; . a , , ; , , ; "Annual report of the Sewage and Waste Treatment Division." ; ; ; "0096-9834" ; ; "0096-9834" ; ; "0096-9834" ; "Annual report of the Sewage and Waste Treatment Division, Bureau of Engineering, Department of Public Works, City and County of San Francisco" , "Annual report of the Sewage and Waste Treatment Division." ; . . "California" .