STEEL, E. W., & STEEL, E. W. (1979). Water Supply And Sewerage By Ernerst W. Steel And Terence J. Mcghee. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)STEEL, Ernest W., agus Ernest W. STEEL. Water Supply And Sewerage By Ernerst W. Steel And Terence J. Mcghee. McGraw-Hill, 1979.
Lua MLA (8ú heag.)STEEL, Ernest W., agus Ernest W. STEEL. Water Supply And Sewerage By Ernerst W. Steel And Terence J. Mcghee. McGraw-Hill, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.