(1968). Geohydrologic maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior.
Lua i Stíl Chicago (17ú heag.)Geohydrologic Maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior, 1968.
Lua MLA (9ú heag.)Geohydrologic Maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.