title: A bias in estimating urban population density functions.
authors.forename: M W
authors.initials: MW
authors.lastname: Frankena
mesh_terms: D000569:Americas; D002170:Canada; D003710:Demography; D019049:Developed Countries; D005843:Geography; D009656:North America; D011153:Population; D014505:Urban Population
keywords: Americas; Canada; Developed Countries; Geographic Factors; North America; Northern America; Population; Spatial Distribution; Urban Spatial Distribution