Before revision: It is independent of other physical or economic factors that might determine the desirability of growing certain plants in a given location.R.E.Storie.
After revision: Developed by R. Earl Storie at University of California Berkley in the 1930's as a method of land valuation, it is independent of other physical or economic factors that might determine the desirability of growing certain plants in a given location.R.E.Storie.