Based on sales for the week ending April 7, 2013

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

17. When Women Were Birds
Terry Tempest Williams, Picador, $15, 9781250024114

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

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

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

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

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

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

24. Subliminal
Leonard Mlodinow, Vintage, $15, 9780307472250

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

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

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

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

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

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

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

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

33. Wreck This Journal
Keri Smith, Perigee, $13.95, 9780399161940

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

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

36. Lucky Peach, Issue 6
David Chang (Ed.), McSweeney's, $12, 9781938073465

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

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

39. Point Your Face at This: Drawings
Demetri Martin, Grand Central, $12.99, 9781455512058

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

41. Gifts of the Crow
John Marzluff, Tony Angell, Atria, $15, 9781439198742

42. Heaven Is for Real
Todd Burpo, Thomas Nelson, $16.99, 9780849946158

43. Are You My Mother?: A Comic Drama
Alison Bechdel, Mariner , $15.95, 9780544002234

44. How to Be Interesting: (In 10 Simple Steps)
Jessica Hagy, Workman , $10.95, 9780761174707

45. The Presidents Club
Nancy Gibbs, Michael Duffy, S&S, $18, 9781439127728

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

47. F for Effort!
Richard Benson, Chronicle, $9.95, 9781452113227

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

49. Outsource Smart
Daven Michaels, McGraw-Hill, $22, 9780071799799

50. Call the Midwife
Jennifer Worth, Penguin, $16, 9780143123255