Based on sales for the week ending July 10, 2011

16. Four Fish
Paul Greenberg, Penguin, $16, 9780143119463

17. The Disappearing Spoon
Sam Kean, Back Bay, $14.99, 9780316051637

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

19. Rand McNally Road Atlas 2012
, Rand McNally, $13.95, 9780528003363

20. War
Sebastian Junger, Twelve, $15.99, 9780446556224

21. Lucky Peach: Issue 1
Chris Ying (Ed.), McSweeney's, $10, 9781936365463

22. Three Cups of Deceit
John Krakauer, Jon Krakauer, Anchor, $9.95, 9780307948762

23. The Tiger
John Vaillant, Vintage, $15, 9780307389046

24. The Last Stand
Nathaniel Philbrick, Penguin, $18, 9780143119609

25. The Sweet Life in Paris
David Lebovitz, Broadway, $14, 9780767928892

26. Medium Raw
Anthony Bourdain, Ecco, $15.99, 9780061718953

27. Last Call
Daniel Okrent, Scribner, $17, 9780743277044

28. The Dirty Life
Kristin Kimball, Scribner, $15, 9781416551614

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

30. Operation Mincemeat
Ben Macintyre, Broadway, $15, 9780307453280

31. Into the Wild
Jon Krakauer, Anchor, $14.95, 9780307387172

32. The Most Beautiful Walk in the World
John Baxter, Harper Perennial, $14.99, 9780061998546

33. How to Read Literature Like a Professor
Thomas C. Foster, Harper, $14.99, 9780060009427

34. Thank You Notes
Jimmy Fallon, Grand Central, $12, 9780892967414

35. Lunch in Paris
Elizabeth Bard, Back Bay, $13.99, 9780316042789

36. The Beekeeper's Lament
Hannah Nordhaus, Harper Perennial, $14.99, 9780061873256

37. A Moveable Feast
Ernest Hemingway, Scribner, $15, 9781439182710

38. Super Natural Every Day
Heidi Swanson, Ten Speed Press, $23, 9781580082778

39. A Moveable Feast
Ernest Hemingway, Scribner, $15, 9780684824994

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

41. Drive
Daniel H. Pink, Riverhead, $16, 9781594484803

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

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

44. What the Dog Saw
Malcolm Gladwell, Back Bay, $16.99, 9780316076203

45. Superfreakonomics
Steven D. Levitt, Stephen J. Dubner, Harper Perennial, $15.99, 9780060889586

46. The Murder Room
Michael Capuzzo, Gotham, $17, 9781592406357

47. The Tipping Point
Malcolm Gladwell, Back Bay, $15.99, 9780316346627

48. My Horizontal Life
Chelsea Handler, Bloomsbury, $14.95, 9781582346182

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

50. The Original Argument
Glenn Beck, Threshold, $16, 9781451650617