Assertion: gravity model | /r/HasProperty | expanded by william j. reilly
Facets:
value: in 1931
type: TEMPORAL
value: to calculate the breaking point
type: PURPOSE
Source sentences:
text: The gravity model was expanded by William J. Reilly in 1931 into Reilly's law of retail gravitation to calculate the breaking point between two places where customers will be drawn to one or another of two competing commercial centers.
text: The gravity model was expanded by William J. Reilly in 1931 into Reilly's law of retail gravitation to calculate the breaking point between two places where customers will be drawn to one or another of two competing commercial centers.