Based on sales for the week ending April 21, 2013

16. Tiny Beautiful Things
Cheryl Strayed, Vintage, $14.95, 9780307949332

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

18. Unlikely Friendships
Jennifer S. Holland, Workman, $13.95, 9780761159131

19. How to Be Interesting
Jessica Hagy, Workman, $10.95, 9780761174707

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

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

22. The Devil in the White City
Erik Larson, Vintage, $16, 9780375725609

23. God's Hotel
Victoria Sweet, Riverhead, $16, 9781594486548

24. Paris: A Love Story
Kati Marton, S&S, $14.99, 9781451691559

25. ObamaCare Survival Guide
Nick J. Tate, Humanix, $19.95, 9780893348625

26. The Social Conquest of Earth
Edward Osborne Wilson, Liveright, $17.95, 9780871403636

27. The Hare With Amber Eyes
Edmund de Waal, Picador, $16, 9780312569372

28. Some Assembly Required
Anne Lamott, Riverhead, $16, 9781594486678

29. The Happiness Project
Gretchen Rubin, Harper, $14.99, 9780061583261

30. Lady Almina and the Real Downton Abbey
The Countess of Carnarvon, Broadway, $15.99, 9780770435622

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

32. Are You My Mother?
Alison Bechdel, Mariner, $15.95, 9780544002234

33. Team of Rivals
Doris Kearns Goodwin, S&S, $21, 9781451688092

34. Prague Winter
Madeleine Albright, Harper Perennial, $15.99, 9780062030344

35. The Untethered Soul
Michael A. Singer, New Harbinger, $16.95, 9781572245372

36. Why Be Happy When You Could Be Normal?
Jeanette Winterson, Grove Press, $15, 9780802120878

37. The Price of Inequality
Joseph E. Stiglitz, Norton, $16.95, 9780393345063

38. Night
Elie Wiesel, FSG, $9.95, 9780374500016

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

40. The Immortal Life of Henrietta Lacks
Rebecca Skloot, Broadway, $16, 9781400052189

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

42. Paris in Love: A Memoir
Eloisa James, Random House, $15, 9780812981902

43. Outliers
Malcolm Gladwell, Back Bay, $16.99, 9780316017930

44. Rand McNally 2013 Road Atlas
Rand McNally, $13.95, 9780528006227

45. Wreck This Journal
Keri Smith, Perigree, $15, 9780399161940

46. The Righteous Mind
Jonathan Haidt, Vintage, $16, 9780307455772

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

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

49. Steal Like an Artist
Austin Kleon, Workman, $10.95, 9780761169253

50. Several Short Sentences about Writing
Verlyn Klinkenborg, Vintage, $15, 9780307279415