Based on sales for the week ending September 4, 2011

16. Wendy and the Lost Boys
Julie Salamon, Penguin Press, $29.95, 9781594202988

17. Lost in Shangri-La
Mitchell Zuckoff, Harper, $26.99, 9780061988349

18. The Social Animal
David Brooks, Random House, $27, 9781400067602

19. Nothing Daunted
Dorothy Wickenden, Scribner, $26, 9781439176580

20. What It Is Like to Go to War
Karl Marlantes, Atlantic Monthly, $25, 9780802119926

21. SEAL Team Six
Howard E. Wasdin, Stephen Templin, St. Martin's, $26.99, 9780312699451

22. Boo: The Life of the World's Cutest Dog
J.H. Lee, Chronicle, $12.95, 9781452103068

23. The Dukan Diet
Pierre Dukan, Crown Archetype, $26, 9780307887962

24. Area 51
Annie Jacobsen, Little Brown, $27.99, 9780316132947

25. The 17 Day Diet
Dr.Mike Moreno, Free Press, $25, 9781451648652

26. Rafa
Rafael Nadal, John Carlin, Hyyperion, $27.99, 9781401324513

27. All My Friends Are Dead
Avery Monsen, Jory John, Chronicle, $9.95, 9780811874557

28. Incognito
David M. Eagleman, Pantheon, $26.95, 9780307377333

29. Sleeping with the Enemy
Hal Vaughan, Knopf, $27.95, 9780307592637

30. The Psychopath Test
Jon Ronson, Riverhead, $25.95, 9781594488016

31. 40 Years of Chez Panisse
Alice Waters, Clarkson Potter, $55, 9780307718266

32. A First-Rate Madness
Nassir Ghaemi, Penguin Press, $27.95, 9781594202957

33. I Am Maru
Mugumogu, Morrow, $15.99, 9780062088413

34. A Book of Secrets
Michael Holroyd, FSG, $26, 9780374115586

35. Blood, Bones & Butter
Gabrielle Hamilton, Random House, $26, 9781400068722

36. After America
Mark Steyn, Regnery, $29.95, 9781596981003

37. The Secrets of the FBI
Ronald Kessler, Crown, $26, 9780307719690

38. Mission Street Food
Karen Leibowitz, Anthony Myint, McSweeney's, $30, 9781936365159

39. Through My Eyes
Tim Tebow, Harper, $26.99, 9780062007285

40. Absolute Monarchs
John Julius Norwich, Random House, $30, 9781400067152

41. Sh*t My Dad Says
Justin Halpern, It Books, $15.99, 9780061992704

42. Love Wins
Rob Bell, HarperOne, $22.99, 9780062049643

43. Cleopatra
Stacy Schiff, Little Brown, $29.99, 9780316001922

44. Reckless Endangerment
Gretchen Morgenson, Joshua Rosner, Times Books, $30, 9780805091205

45. David Crockett
Michael Wallis, Norton, $27.95, 9780393067583

46. The Triple Agent
Joby Warrick, Doubleday, $26.95, 9780385534185

47. Jesus Calling
Sarah Young, Integrity , $14.99, 9781591451884

48. The 4-Hour Body
Timothy Ferriss, Crown , $27, 9780307463630

49. Tomatoland
Barry Estabrook, Adrews McMeel, $19.99, 9781449401092

50. To End All Wars
Adam Hochschild, Houghton Mifflin Harcourt, $28, 9780618758289