Leonard, George, 1923-2010. Walking on the edge of the world / George Leonard. - Boston : Houghton Mifflin, 1988. - xii, 388 p. ; 24 cm. "A Marc Jaffe book." ISBN: 0395483115 LCCN: 88012837 LC Class. No.: PN4874.L37 .L46 1988 / A3 1988 Dewey Class. No.: 070/.92/4 B