Extended Hardcover Nonfiction Based on sales from the week ending April 13, 2003 16. Bush's Brain James Moore, 0471423270, Wiley, $27.95 17. Dark Star Safari Paul Theroux, 0618134247, Houghton Mifflin, $28 18. Longitudes and Attitudes Thomas L. Friedman, 0374190666, FSG, $26 19. I Am the Central Park Jogger Trisha Meili, 0743244370, Scribner, $25 20. Dereliction of Duty Robert Patterson, 0895261405, Regnery, $27.95 21. The South Beach Diet Arthur Agatston, 1579546463, Rodale, $24.95 22. Songbook Nick Hornby, 0971904774, McSweeney's, $26 23. The Fat Flush Plan Ann Louise Gittleman, 0071383832, McGraw-Hill, $21.95 24. Positively Fifth Street James McManus, 0374236488, FSG, $26 25. Regarding the Pain of Others Susan Sontag, 0374248583, FSG, $20 26. Who Moved My Cheese? Spencer Johnson, 0399144463, Putnam, $19.95 27. The Get with the Program! Guide to Good Eating Bob Greene, 0743243102, S&S, $24 28. The Purpose-Driven Life Rick Warren, 0310205719, Zondervan, $19.99 29. An Army at Dawn Rick Atkinson, 0805062882, Holt, $30 30. The Hedgehog, the Fox, and the Magister's Pox Stephen Jay Gould, 0609601407, Three Rivers, $25.95 31. The Blue Day Book Bradley Trevor Greive, 0740704818, Andrews McMeel, $9.95 32. The Future of Freedom Fareed Zakaria, 0393047644, Norton, $24.95 33. A Dangerous Place Marc Reisner, 0679420118, Pantheon, $22 34. The Hunt for Bin Laden Robin Moore, 0375508619, Random House, $24.95 35. The Power of Full Engagement Jim Loehr, Tony Schwartz, 0743226747, Free Press, $26 36. What Liberal Media? The Truth about Bias and the News Eric Alterman, 0465001769, Basic, $25 37. Funny Letters from Famous People Charles Osgood (Ed.), 076791175X, Broadway, $19.95 38. Warrior of the Light Paulo Coelho, 0060527978, HarperCollins, $18.95 39. The Incredible Truth about Motherhood Bradley Trevor Greive, 0740719890, Andrews McMeel, $9.95 40. Body for Life Bill Phillips, 0060193395, HarperCollins, $26.95 41. Barefoot Contessa Family Style Ina Garten, 060961066X, Clarkson N. Potter, $35 42. Good to Great Jim Collins, 0066620996, HarperCollins, $27.50 43. Abraham Bruce Feiler, 0380977761, Morrow, $23.95 44. Bush at War Bob Woodward, 0743204735, S&S, $28 45. Don't Know Much about History C. Davis Kenneth, 0060083816, HarperCollins, $26.95 46. Middle East Illusions Noam Chomsky, 0742526992, Rowman & Littlefield, $22.95 47. A Tale of Two Valleys Alan Deutschman, 0767907035, Broadway, $23.95 48. 1421: The Year China Discovered America Gavin Menzies, 0060537639, Morrow, $27.95 49. Kingdom of Fear Hunter S. Thompson, 0684873230, S&S, $25 50. Michelangelo & the Pope's Ceiling Ross King, 0802713955, Walker, $28