Based on sales for the week ending January 6, 2013

16. Winter of the World
Ken Follett, Dutton, $36, 9780525952923

17. NW
Zadie Smith, Penguin Press, $26.95, 9781594203978

18. A Hologram for the King
Dave Eggers, McSweeney's, $25, 9781936365746

19. Fairy Tales from the Brothers Grimm
Philip Pullman (Ed.), Viking, $27.95, 9780670024971

20. A Dance With Dragons
George R.R. Martin, Bantam, $35, 9780553801477

21. Mr. Penumbra's 24-Hour Bookstore
Robin Sloan, FSG, $25, 9780374214913

22. Where'd You Go, Bernadette
Maria Semple, Little Brown, $25.99, 9780316204279

23. The Light Between Oceans
M.L. Stedman, Scribner, $25, 9781451681734

24. The Forgotten
David Baldacci, Grand Central, $27.99, 9780446573054

25. The Time Keeper
Mitch Albom, Hyperion, $24.99, 9781401322786

26. Beautiful Ruins
Jess Walter, Harper, $26.99, 9780061928123

27. Back to Blood
Tom Wolfe, Little Brown, $30, 9780316036313

28. A Memory of Light
Robert Jordan, Brandon Sanderson, Tor, $34.99, 9780765325952

29. The Middlesteins
Jami Attenberg, Grand Central, $24.99, 9781455507214

30. Blasphemy
Sherman Alexie, Grove Press, $27, 9780802120397

31. The Dog Stars
Peter Heller, Knopf, $24.95, 9780307959942

32. Cold Days
Jim Butcher, Roc, $27.95, 9780451464408

33. Threat Vector
Tom Clancy, Putnam Adult, $28.95, 9780399160455

34. The Intercept
Dick Wolf, Morrow, $27.99, 9780062064837

35. The Secret Keeper
Kate Morton, Atria, $26.99, 9781439152805

36. The Hobbit
J.R.R. Tolkien, Houghton Mifflin Harcourt, $25, 9780618968633

37. The Last Man
Vince Flynn, Atria, $27.99, 9781416595212

38. Cross Roads
Wm.Paul Young, Faithwords, $24.99, 9781455516049

39. Me Before You
Jojo Moyes, Pamela Dorman, $27.95, 9780670026609

40. In Sunlight and in Shadow
Mark Helprin, Houghton Mifflin Harcourt, $28, 9780547819235

41. Empire and Honor
W.E.B. Griffin, William E. Butterworth, IV, Putnam Adult, $27.95, 9780399160660

42. The Death of Bees
Lisa O'Donnell, Harper, $25.99, 9780062209849

43. Mrs Queen Takes the Train
William Kuhn, Harper, $25.99, 9780062208286

44. The Testament of Mary
Colm Tólbín, Scribner, $19.99, 9781451688382

45. Gun Machine
Warren Ellis, Mulholland, $25.99, 9780316187404

46. The Panther
Nelson DeMille, Grand Central, $27.99, 9780446580847

47. Two Graves
Douglas J. Preston, Lincoln Child, Grand Central, $26.99, 9780446554992

48. The Twelve
Justin Cronin, Ballantine, $28, 9780345504982

49. The River Swimmer
Jim Harrison, Grove Press, $25, 9780802120731

50. Notorious Nineteen
Janet Evanovich, Bantam, $28, 9780345527745