Based on sales for the week ending April 10, 2011

16. Every Last One
Anna Quindlen, Random House, $15, 9780812976885

17. Half Broke Horses
Jeannette Walls, Scribner, $15, 9781416586296

18. My Name Is Mary Sutter
Robin Oliveira, Penguin, $15, 9780143119135

19. The Solitude of Prime Numbers
Paolo Giordano, Penguin, $15, 9780143118596

20. The Double Comfort Safari Club
Alexander McCall Smith, Anchor, $14, 9780307277480

21. Sarah's Key
Tatiana De Rosnay, St. Martin's, $13.95, 9780312370848

22. Lord of Misrule
Jaimy Gordon, Vintage, $15, 9780307946737

23. The Three Weissmanns of Westport
Cathleen Schine, Picador, $14, 9780312680527

24. The Lacuna
Barbara Kingsolver, Harper Perennial, $16.99, 9780060852580

25. A Question of Belief
Donna Leon, Penguin, $15, 9780143118954

26. The Invisible Bridge
Julie Orringer, Vintage, $15.95, 9781400034376

27. The Girl With the Dragon Tattoo
Stieg Larsson, Vintage, $14.95, 9780307454546

28. Let the Great World Spin
Colum McCann, Random House, $15, 9780812973990

29. The Girl Who Played With Fire
Stieg Larsson, Vintage, $15.95, 9780307454553

30. Ape House
Sara Gruen, Spiegel & Grau, $15, 9780385523226

31. Solar
Ian McEwan, Anchor, $15, 9780307739537

32. The Sweetness at the Bottom of the Pie
Alan Bradley, Bantam, $15, 9780385343497

33. Anthill
Edward Osborne Wilson, Norton, $14.95, 9780393339703

34. The Ice Princess
Camilla Lackberg, Free Press, $15, 9781451621747

35. The Forgotten Garden
Kate Morton, Washington Square Press, $15, 9781416550556

36. True Grit
Charles Portis, Overlook, $14.95, 9781590204597

37. The Elegance of the Hedgehog
Muriel Barbery, Europa Editions, $15, 9781933372600

38. The Great Gatsby
F. Scott Fitzgerald, Scribner, $14, 9780743273565

39. The Windup Girl
Paolo Bacigalupi, Night Shade, $14.95, 9781597801584

40. The Finkler Question
Howard Jacobson, Bloomsbury, $15, 9781608196111

41. Heart of the Matter
Emily Giffin, St. Martin's, $14.99, 9780312554170

42. Angelology
Danielle Trussoni, Penguin, $16, 9780143118466

43. Russian Winter
Daphne Kalotay, Harper Perennial, $14.99, 9780061962172

44. Parrot and Olivier in America
Peter Carey, Vintage, $15.95, 9780307476012

45. The Lotus Eaters
Tatjana Soli, St. Martin's, $14.99, 9780312674441

46. Pearl of China
Anchee Min, Bloomsbury, $15, 9781608193127

47. The Alchemist
Paulo Coelho, HarperOne, $14.99, 9780061122415

48. City of Thieves
David Benioff, Plume, $15, 9780452295292

49. Mudbound
Hillary Jordan, Algonquin, $13.95, 9781565126770

50. A Gate at the Stairs
Lorrie Moore, Vintage, $15, 9780375708466