This paper hypothesizes (1) the softer the subject, or (2) the purer the subject, or (3) the more a subject can be characterized as life-oriented, the greater the number of books that will be charged. Interaction and higher order (polynomial) combinations between the three characteristics are also hypothesized. A scale value for each characteristic of 60 academic subjects is determined by a survey of faculty at the University of Southwestern Louisiana. Correlation and multiple regression are employed to assess the proportion of variance accounted for. Hypothesis (1) is weakly supported; hypothesis (2) is modestly supported providing other variables are not held constant. Hypothesis (3) is not supported under any conditions tested nor are any of the hypothesized interactions or higher orders. (Author/WBC)