(1949). Population census methods.
Lua i Stíl Chicago (17ú heag.)Population Census Methods. Lake Success, N.Y, 1949.
Lua MLA (8ú heag.)Population Census Methods. 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
(1949). Population census methods.
Lua i Stíl Chicago (17ú heag.)Population Census Methods. Lake Success, N.Y, 1949.
Lua MLA (8ú heag.)Population Census Methods. 1949.