A Fall of Moondust

From the back cover of the Harbrace paperback: "The action of A Fall of Moondust takes place almost a century from now when tours on the moon are a common occurrence. One of the high points of each tour is a cruise around the Sea of Thirst, a body of volcanic dust, in a specially designed vessel called the Selene On a perfectly routine voyage one day the Selene suddenly disappears. How do you locate a small tourist "cruiser" buried beneath fifty feet of dust? If you find it, how do you rescue the passengers and crew? If you are on board, how do you feel and what do you do while brave men and expert technicians join forces in a race against time? Sustained excitement, lively humor, and an engaging cast of characters make this one of Arthur C. Clarke's most intriguing novels."