Não informado. (1953). Geophysical digest. Central Board of Geophysics.
Lua i Stíl Chicago (17ú heag.)Não informado. Geophysical Digest. Calcutta, India: Central Board of Geophysics, 1953.
Lua MLA (8ú heag.)Não informado. Geophysical Digest. Central Board of Geophysics, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.