a city in southwestern Pennsylvania at the beginning of the Ohio river; site of Carnegie-Mellon University and the University of Pittsburgh
a city in southwestern Pennsylvania where the confluence of the Allegheny River and Monongahela River forms the Ohio River; long an important urban industrial area; site of Carnegie-Mellon University and the University of Pittsburgh
a city in southwestern Pennsylvania where the confluence of the Allegheny River and Monongahela River forms the Ohio River; long an important urban industrial area; site of Carnegie Mellon University and the University of Pittsburgh
