ABSTRACT
Much present-day research in urban geography has its roots in the work of Walter Christaller, a German scholar from Bavaria. Christaller was concerned with the central places only. Some central places are more important than others, their central functions extend over regions in which other central places of less importance exist. Christaller devised a means of measuring centrality of towns their relative importance in regard to the surrounding region. Christaller assumes that central place has monopoly in supply of good to its complementary region by virtue of the price at which it can offer the good. Goods produced at a central place, and the services offered there, are called central goods and services. The good has both an upper and a lower limit to its range. The upper limit is the maximum radius of sales beyond which the price of good is too high for it to be sold. The upper limit may be either an ideal or real limit.
