Based on sales for the week ending February 27, 2011

16. Real Happiness
Sharon Salzberg, Workman, $14.95, 9780761159254

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

18. Half the Sky
Nicholas D. Kristof, Sheryl WuDunn, Vintage, $15.95, 9780307387097

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

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

21. Eat, Pray, Love
Elizabeth Gilbert, Penguin, $16, 9780143118428

22. The Financial Crisis Inquiry Report
PublicAffairs, $14.99, 9781610390415

23. The Other Wes Moore
Wes Moore, Spiegel & Grau, $15, 9780385528207

24. Making Toast
Roger Rosenblatt, Ecco, $12.99, 9780061825958

25. Mennonite in a Little Black Dress
Rhoda Janzen, Holt, $14, 9780805092257

26. Women Food and God
Geneen Roth, Scribner, $15, 9781416543084

27. The Poisoner's Handbook
Deborah Blum, Penguin, $16, 9780143118824

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

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

30. The Checklist Manifesto
Atul Gawande, Picador, $15, 9780312430009

31. The Lost City of Z
David Grann, Vintage, $15.95, 9781400078455

32. Country Driving
Peter Hessler, Harper Perennial, $15.99, 9780061804106

33. You Are Not a Gadget
Jaron Lanier, Vintage, $15, 9780307389978

34. Stones Into Schools
Greg Mortenson, Penguin, $16, 9780143118237

35. Strength in What Remains
Tracy Kidder, Random House, $16, 9780812977615

36. When Everything Changed
Gail Collins, Back Bay, $15.99, 9780316014045

37. Food Rules
Michael Pollan, Penguin, $11, 9780143116387

38. Awkward Family Photos
Mike Bender, Doug Chernack, Three Rivers, $15, 9780307592293

39. Paris Was Ours
Penelope Rowlands (Ed.), Algonquin, $15.95, 9781565129535

40. Rand McNally 2011 Road Atlas
Rand McNally, $13.95, 9780528355288

41. Christianity
Diarmaid MacCulloch, Penguin Books, $25, 9780143118695

42. The CalorieKing Calorie, Fat & Carbohydrate Counter 2011
Allan Borushek, Family Health, $8.99, 9781930448339

43. Americans in Paris
Charles Glass, Penguin Books, $18, 9780143118664

44. Are You There, Vodka? It's Me, Chelsea
Chelsea Handler, Simon Spotlight, $16, 9781416596363

45. Clean
Alejandro Junger, HarperOne, $14.99, 9780061735332

46. The Power of Now
Eckhart Tolle, New World , $14, 9781577314806

47. The Omnivore's Dilemma
Michael Pollan, Penguin , $16, 9780143038580

48. Tattoos on the Heart
Gregory Boyle, Free Press, $14, 9781439153154

49. Blink
Malcolm Gladwell, Back Bay, $15.99, 9780316010665

50. The Cello Suites
Eric Siblin, Grove, $15.95, 9780802145246