bụrụ na a ga-echekwa ọdịnihu nke ihe a kpọrọ mmadụ". N'ime ọkwa sitere na Bul Bulletin banyere ọnọdụ nke elekere, ha gara n'ebe dị anya ịkpọ oku ka ndị...
Precipitation and its Consequences for the Natural Environment". Ecology Committee, Bul. 1.. Retrieved on 5 December 2021. (December 6, 2012) in Satake: Acid Rain...