"Bevölkerungsentwicklung" . . . . . . . . . . . . . "Graphing population" . "Uses charts to demonstrate issues of population, over-crowding, and urbanisation." . . "Juvenile works" . . . . . "Charts, diagrams, etc" . "Explains how graphs can be used to help students learn about population, describing the different types of graphing that can be used to organize data related to population growth, migration, rich and poor, resource depletion, and other related topics." . "Welt" . . . . "Volkszählung" . . "Bevölkerungsstatistik" . .