197270 Threlfall, A. J. (1978). Design charts for water retaining structures - to BS5337. Wexham Springs, Slough : Cement & Concrete Association.
Lua i Stíl Chicago (17ú heag.)197270 Threlfall, A. J. Design Charts for Water Retaining Structures - to BS5337. Wexham Springs, Slough : Cement & Concrete Association, 1978.
Lua MLA (9ú heag.)197270 Threlfall, A. J. Design Charts for Water Retaining Structures - to BS5337. Wexham Springs, Slough : Cement & Concrete Association, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.