It estimated that in 1989 city delivery cost per piece was only 8 percent lower than rural delivery, but that city delivery cost per delivery point was actually 7 percent higher than rural delivery cost.
Rural delivery cost per piece in 1989 was 8 percent higher than city delivery cost per piece.
The next sections of this paper will first present some new ways of thinking about a familiar method, the case study, and then introduce the six applications, describing what is required, in terms of methodology, to get the benefits case studies can offer.