Based on sales for the week ending July 15, 2012

16. Yes, Chef
Marcus Samuelsson, Random House, $27, 9780385342605

17. Are You My Mother?
Alison Bechdel, Houghton Mifflin Harcourt, $22, 9780618982509

18. The Power of Habit
Charles Duhigg, Random House, $28, 9781400069286

19. Cronkite
Douglas Brinkley, Harper, $34.99, 9780061374265

20. Monkey Mind
Daniel Smith, S&S, $25, 9781439177303

21. Behind the Beautiful Forevers
Katherine Boo, Random House, $27, 9781400067558

22. The Price of Inequality
Joseph E. Stiglitz, Norton, $27.95, 9780393088694

23. Dream Team
Jack McCallum, Ballantine, $28, 9780345520487

24. When Women Were Birds
Terry Tempest Williams, FSG, $23, 9780374288976

25. Goodnight iPad
Ann Droyd, Blue Rider, $14.95, 9780399158568

26. The Tools
Phil Stutz, Barry Michels, Spiegel & Grau, $25, 9780679644446

27. It's the Middle Class, Stupid!
James Carville, Stan Greenberg, Blue Rider Press, $26.95, 9780399160394

28. Mick
Christopher Andersen, Gallery, $27, 9781451661446

29. American Grown
Michelle Obama, Crown, $30, 9780307956026

30. It Worked For Me
Colin Powell, Harper, $27.99, 9780062135124

31. Thinking, Fast and Slow
Daniel Kahneman, FSG, $30, 9780374275631

32. Bringing Up Bébé
Pamela Druckerman, Penguin Press, $25.95, 9781594203336

33. I Am a Pole (and So Can You!)
Stephen Colbert, Paul Hildebrandt (Illus.), Grand Central, $15.99, 9781455523429

34. Prague Winter
Madeleine Albright, Harper, $29.99, 9780062030313

35. Twilight of the Elites
Christopher Hayes, Crown, $26, 9780307720450

36. The Swerve
Stephen J. Greenblatt, Norton, $26.95, 9780393064476

37. Eat and Run
Scott Jurek, Steve Friedman, Houghton Mifflin Harcourt, $26, 9780547569659

38. As Texas Goes?
Gail Collins, Liveright, $25.95, 9780871404077

39. The Social Conquest of Earth
Edward Osborne Wilson, Liveright, $27.95, 9780871404138

40. This Is How
Augusten Burroughs, St. Martin's, $24.99, 9780312563554

41. Love, Life, and Elephants
Daphne Jenkins Sheldrick, FSG, $27, 9780374104573

42. My Cross to Bear
Gregg Allman, Morrow, $27.99, 9780062112033

43. Plenty
Yotam Ottolenghi, Chronicle, $35, 9781452101248

44. Catherine the Great
Robert K. Massie, Random House, $35, 9780679456728

45. The Receptionist
Janet Groth, Algonquin, $21.95, 9781616201319

46. Wherever I Wind Up
R.A. Dickey, Blue Rider Press, $26.95, 9780399158155

47. Strengths Finder 2.0
Tom Rath, Gallup, $24.95, 9781595620156

48. The Mobile Wave
Michael Saylor, Vanguard, $25.99, 9781593157203

49. I Hate Everyone... Starting with Me
Joan Rivers, Berkley, $25.95, 9780425248300

50. Wheat Belly
William Davis, Rodale, $25.99, 9781609611545