Gupta, G.S. Managerial economics G.S. Gupta. - 13th. rep. ed. - New Delhi Tata McGrawHill Publishing Company [n.d.] - x, 271p.: ill.; 23 cm. ISBN: 74601261 Subjects--Topical Terms: Managerial economics. Dewey Class. No.: 658.4033 / G96M