Duncan, Robert Lipscomb, 1927- Dragons at the gate : a novel / by Robert L. Duncan. - New York : Morrow, 1975. - 287 p. ; 22 cm. ISBN: 068802937X LCCN: 75011572 LC Class. No.: PZ 4 .D913 Dr 1975 PS3554.U465 / Dr 1975 Dewey Class. No.: 813/.5/4