Nagao, Tadahiko. Kokology : the game of self-discovery / Soreike kokology Tadahiko Nagao and Isamu Saito. - New York : Simon & Schuster, c2000. - 174 p. : ill. ; 18 cm. ISBN: 0684871483 9780684871486 LCCN: 00036575 Subjects--Topical Terms: Psychology.Self-help LC Class. No.: BF149 / .N2513 2000 Dewey Class. No.: 158