Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Njem: The Geographic Names Information System (GNIS) bụ nchekwa data nke nwere aha na ozi ebe banyere ihe karịrị nde abụọ nke anụ ahụ na ọdịbendị dị na United States of America na ókèala ya. Ọ bụ ụdị akwụkwọ akụkọ. GNIS bụ nke United States Geological Survey mepụtara na mmekorita ya na United States Board on Geographic Names (BGN) iji kwalite ịhazi aha njirimara.  Ajụjụ: Gịnị bụ aha nchekwa data ahụ?
Usoro Ihe Ọmụma Banyere Aha Ala (GNIS)