Zvoncheck, Juls Cruises : selecting, selling and booking / Juls Zvoncheck. - Englewood Cliffs, N. J. : Prentice Hall, c1988. - vi, 235p. : ill. ; 28 cm. Includes index. ISBN: 0131892916 Subjects--Topical Terms: Ocean travelCruise ships LC Class. No.: G550 / Z8 1988