Publisher:New York : G.P. Putnam's Sons, 2013, c1973.
General Note: Map on lining papers."With a new preface by the author"--Dust jacket."The first Dirk Pitt novel"--Dust jacket."Originally published in Great Britain in 1973 as May day by Sphere Books Ltd., and in 1977 by Bantam Books, Inc., as The Mediterranean caper"--T.p. verso.