Based on sales for the week ending April 17, 2011

16. Tinkers
Paul Harding, Bellevue Literary Press, $14.95, 9781934137123

17. The Girl Who Fell From the Sky
Heidi W. Durrow, Algonquin, $13.95, 9781616200152

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

39. Men and Dogs
Katie Crouch, Back Bay , $13.99, 9780316002141

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

41. A Reliable Wife
Robert Goolrick, Algonquin, $14.95, 9781565129771

42. Infinite Jest
David Foster Wallace, Back Bay, $17.99, 9780316066525

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

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

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

46. Olive Kitteridge
Elizabeth Strout, Random House, $14, 9780812971835

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

48. The Elephant's Journey
Jose Saramago, Mariner, $15.95, 9780547574110

49. The Island
Elin Hilderbrand, Reagan Arthur Books, $14.99, 9780316043885

50. The Great Gatsby
F. Scott Fitzgerald, Scribner, $15, 9780743273565