Based on sales for the week ending March 20, 2011

16. Squirrel Seeks Chipmunk
David Sedaris, Ian Falconer (Illus.), Little Brown, $21.99, 9780316038393

17. A Visit From the Goon Squad
Jennifer Egan, Knopf, $25.95, 9780307592835

18. The Jungle
Clive Cussler, Jack Du Brul, Putnam, $27.95, 9780399157042

19. West of Here
Jonathan Evison, Algonquin, $24.95, 9781565129528

20. Three Stages of Amazement
Carol Edgarian, Scribner, $25, 9781439198308

21. A Red Herring Without Mustard
Alan Bradley, Delacorte, $23, 9780385342322

22. Toys
James Patterson, Neil McMahon, Little Brown, $27.99, 9780316097369

23. The Complaints
Ian Rankin, Reagan Arthur Books, $24.99, 9780316039741

24. When the Thrill Is Gone
Walter Mosley, Riverhead, $26.95, 9781594487811

25. Open City
Teju Cole, Random House, $25, 9781400068098

26. Trinity Six
Charles Cumming, St. Martin's, $24.99, 9780312675295

27. The Informationist
Taylor Stevens, Crown, $23, 9780307717092

28. Gideon's Sword
Douglas Preston, Lincoln Child, Grand Central, $26.99, 9780446564328

29. An Object of Beauty
Steve Martin, Grand Central, $26.99, 9780446573641

30. Murder in Passy
Cara Black, Soho Crime, $25, 9781569478820

31. Love You More
Lisa Gardner, Bantam, $26, 9780553807257

32. Silent Mercy
Linda Fairstein, Dutton, $26.95, 9780525952022

33. The Oracle of Stamboul
Michael David Lukas, Harper, $24.99, 9780062012098

34. Matterhorn
Karl Marlantes, Atlantic Monthly, $24.95, 9780802119285

35. Fall of Giants
Ken Follett, Dutton, $36, 9780525951650

36. The Union Quilters
Jennifer Chiaverini, Dutton, $24.95, 9780525952039

37. The Illumination
Kevin Brockmeier, Pantheon, $24.95, 9780375425318

38. Great House
Nicole Krauss, Norton, $24.95, 9780393079982

39. While Mortals Sleep
Kurt Vonnegut, Delacorte, $27, 9780385343732

40. The Confession
John Grisham, Doubleday, $28.95, 9780385528047

41. Night Season
Chelsea Cain, Minotaur, $24.99, 9780312619763

42. Night Vision
Randy Wayne White, Putnam, $25.95, 9780399157059

43. Tick Tock
James Patterson, Michael Ledwidge, Little Brown, $27.99, 9780316037914

44. The Death Instinct
Jed Rubenfeld, Riverhead, $26.95, 9781594487828

45. We, the Drowned
Carsten Jensen, Houghton Mifflin Harcourt, $28, 9780151013777

46. River Marked
Patricia Briggs, Ace, $26.95, 9780441019731

47. Towers of Midnight
Robert Jordan, Brandon Sanderson, Tor, $29.99, 9780765325945

48. Left Neglected
Lisa Genova, Gallery, $25, 9781439164631

49. Georgia Bottoms
Mark Childress, Little Brown, $24.99, 9780316033046

50. Pale Demon
Kim Harrison, Harper Voyager, $26.99, 9780061138065