Based on sales for the week ending February 12, 2012

16. F in Exams
Richard Benson, Chronicle, $9.95, 9780811878319

17. Born to Run
Christopher McDougall, Vintage, $15.95, 9780307279187

18. The New Jim Crow
Michelle Alexander, The New Press, $19.95, 9781595586438

19. At Home
Bill Bryson, Anchor, $15.95, 9780767919395

20. Townie
Andre Dubus III, Norton, $15.95, 9780393340679

21. The World Almanac and Book of Facts 2012
Sarah Janssen (Ed.), World Almanac, $12.99, 9781600571480

22. Winner-Take-All Politics
Jacob S. Hacker, Paul Pierson, S&S, $15, 9781416588702

23. The Devil in the White City
Erik Larson, Vintage, $15.95, 9780375725609

24. What to Expect When You're Expecting
Heidi Murkoff, Sharon Mazel, Workman, $14.95, 9780761148579

25. Tiny Homes: Simple Shelter
Lloyd Kahn, Shelter, $24.95, 9780936070520

26. The 5 Love Languages
Gary Chapman, Northfield, $14.99, 9780802473158

27. The Four Agreements
Don Miguel Ruiz, Amber-Allen, $12.95, 9781878424310

28. The Old Farmer's Almanac 2012
Old Farmer's Almanac, $6.95, 9781571985446

29. Battle Hymn of the Tiger Mother
Amy Chua, Penguin, $16, 9780143120582

30. The Book of Awakening
Mark Nepo, Conari, $18.95, 9781573241175

31. Zeitoun
Dave Eggers, Vintage, $15.95, 9780307387943

32. Malcolm X: A Life of Reinvention
Manning Marable, Penguin, $18, 9780143120322

33. The Glass Castle
Jeannette Walls, Scribner, $16, 9780743247542

34. The Emperor of All Maladies
Siddhartha Mukherjee, Scribner, $18, 9781439170915

35. I Remember Nothing
Nora Ephron, Vintage, $14, 9780307742803

36. Sex at Dawn
Christopher Ryan, Cacilda Jetha, Harper Perennial, $15.99, 9780061707810

37. Poser
Claire Dederer, Picador, $15, 9781250002334

38. The Big Short
Michael Lewis, Norton, $15.95, 9780393338829

39. Eat to Live
Joel Fuhrman, Little Brown, $15.99, 9780316120913

40. The Power of Now
Eckhart Tolle, New World, $15, 9781577314806

41. Wreck This Journal
Keri Smith, Perigee, $13.95, 9780399533464

42. The New Western Garden Book
Kathleen Norris Brenzel (Ed.), Oxmoor House, $34.95, 9780376039200

43. Forks Over Knives
Gene Stone (Ed.), Experiment, $13.95, 9781615190454

44. Triumph of the City
Edward Glaeser, Penguin, $16, 9780143120544

45. The Onion Presents: Love, Sex, and Other Natural Disasters
The Staff of the Onion, Quirk, $12.95, 9781594745492

46. The Official SAT Study Guide
College Board, $21.99, 9780874478525

47. The Hunger Pains: A Parody
The Harvard Lampoon, Touchstone, $13.99, 9781451668209

48. Twelve Steps to a Compassionate Life
Karen Armstrong, Anchor, $14, 9780307742889

49. A Brief History of Thought
Luc Ferry, Harper Perennial, $14.99, 9780062074249

50. If You Ask Me: (And of Course You Won't)
Betty White, Berkley, $15, 9780425245286