1. Principles of economics :   Publication: Homewood , Ill.: Irwin, 1971 . xi, 257p.: Date:1971 Availability: Copies available: Turkeyen Campus Social Sciences [HB 172.5 P484] (1), Actions: Add to cart No cover image available No cover image available
2. Social returns to public information services :   Publication: Minneapolis, Ma. : University of Minnesota, 1972 . 12 leaves , Reprinted from the American Economic Review, Vol. 62 no. 1 February, 1962 p. 119-130 Date:1972 Availability: Copies available: Turkeyen Campus Social Sciences [HD9000.4 H39] (1), Actions: Add to cart No cover image available No cover image available