n.a river that rises in Pennsylvania and flows north into New York and then back south through Pennsylvania again to join the Monongahela River at Pittsburgh which is the beginning of the Ohio River

同義詞：Allegheny River

A Life History Sketch of the Allegheny Woodrat
Interference by weeds and deer with Allegheny hardwood reproduction
Gradual and sudden forest canopy gaps in Allegheny northern hardwood forests
Mortality trends in type 1 diabetes. The Allegheny County (Pennsylvania) Registry 1965-1999.
Factors associated with the decline disease of sugar maple on the Allegheny plateau.
Incidence OF systemic sclerosis in allegheny county, Pennsylvania. A twenty﹜ear study of hospitalヾiagnosed cases, 1963–1982
Incidence OF systemic sclerosis in allegheny county, Pennsylvania. A twenty‐year study of hospital‐diagnosed cases, 1963–1982
Alcohol, firearms, and suicide among youth. Temporal trends in Allegheny County, Pennsylvania, 1960 to 1983.
Stream Ecosystem Response to Limestone Treatment in Acid Impacted Watersheds of the Allegheny Plateau
A 300-Year History of Disturbance and Canopy Recruitment for Co-Occurring White Pine and Hemlock on the Allegheny Plateau, USA