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Statistical graphics : design principles and practices
Schmid, Calvin F., (1983)
Visualizing data
Cleveland, William S., (1993)
So überzeugt man mit Statistik
Krämer, Walter, (1994)
Growth of cities and towns, State of Washington : publ. by Washington State, Planning and Community Affairs Agency
Schmid, Calvin F., (1969)
Urban crime areas
Schmid, Calvin F., (1960)
Generalizations concerning the ecology of the American city
Schmid, Calvin F., (1950)