Based on sales for the week ending March 12, 2011

16. Orange Is the New Black
Piper Kerman, Spiegel & Grau, $15, 9780385523394

17. Three Cups of Tea
Greg Mortenson, David Oliver Relin, Penguin, $16, 9780143038252

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

19. Infinite City: A San Francisco Atlas
Rebecca Solnit, Sandow Birk (Illus.), University of California Press, $24.95, 9780520262508

20. Taking the Leap
Pema Chodron, Shambhala, $14, 9781590308431

21. Every Day in Tuscany
Frances Mayes, Broadway, $15, 9780767929837

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

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

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

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

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

27. The Big Burn
Timothy Egan, Mariner, $15.95, 9780547394602

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

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

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

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

32. Silk Parachute
John McPhee, FSG, $15, 9780374532628

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

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

35. Americans in Paris
Charles Glass, Penguin, $18, 9780143118664

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

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

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

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

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

41. Savor
Thich Nhat Hanh, Lilian Cheung, HarperOne, $15.99, 9780061697708

42. Where Men Win Glory
Jon Krakauer, Anchor, $15.95, 9780307386045

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

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

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

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

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

48. God Is Not Great
Christopher Hitchens, Twelve, $14.99, 9780446697965

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

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