Based on sales for the week ending May 8, 2011

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

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

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

19. The Lonely Polygamist
Brady Udall, Norton, $15.95, 9780393339710

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

21. Girl in Translation
Jean Kwok, Riverhead, $15, 9781594485152

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

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

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

25. The Man From Beijing
Henning Mankell, Vintage, $15, 9780307472847

26. Super Sad True Love Story
Gary Shteyngart, Random House, $15, 9780812977868

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

28. Room
Emma Donoghue, Back Bay, $14.99, 9780316098328

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

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

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

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

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

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

35. Fly Away Home
Jennifer Weiner, Washington Square Press, $15, 9780743294287

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

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

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

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

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

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

42. The Beach Trees
Karen White, NAL, $15, 9780451233073

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

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

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

46. Secret Daughter
Shilpi Somaya Gowda, Morrow, $13.99, 9780061928352

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

48. The Guernsey Literary and Potato Peel Pie Society
Mary Ann Shaffer, Annie Barrows, Dial, $15, 9780385341004

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

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