Monclova (mŏnclōvə), city (1990 pop. 177,792), central Coahuila state, Mexico. Situated on the northern end of the Sierra Madre Oriental, it is a regional commercial and industrial center. Monclova's chief industry is the production of iron and steel. It is the third largest city in Coahuila state.
"Monclova." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (September 23, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/monclova
"Monclova." The Columbia Encyclopedia, 6th ed.. . Retrieved September 23, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/monclova