Based on sales for the week ending March 18, 2012

16. The Sisters Brothers
Patrick DeWitt, Ecco, $14.99, 9780062041289

17. Major Pettigrew's Last Stand
Helen Simonson, Random House, $15, 9780812981223

18. The Girl With the Dragon Tattoo
Stieg Larsson, Vintage, $15.95, 9780307949493

19. The Great Gatsby
F.Scott Fitzgerald, Scribner, $15, 9780743273565

20. Room
Emma Donoghue, Back Bay, $14.99, 9780316098328

21. Sarah's Key
Tatiana De Rosnay, St. Martin's, $13.99, 9781250004345

22. Dreams of Joy
Lisa See, Random House, $15, 9780812980547

23. When the Killing's Done
T.C. Boyle, Penguin, $16, 9780143120391

24. The Girl Who Played With Fire
Stieg Larsson, Vintage, $15.95, 9780307454553

25. The Art of Hearing Heartbeats
Jan-Philipp Sendker, Other Press, $14.95, 9781590514634

26. Before I Go to Sleep
S.J. Watson, Harper, $14.99, 9780062060563

27. Tinker Tailor Soldier Spy
John le Carré, Penguin, $16, 9780143120933

28. Hotel on the Corner of Bitter and Sweet
Jamie Ford, Ballantine, $15, 9780345505347

29. The Story of Beautiful Girl
Rachel Simon, Grand Central, $12, 9780446574457

30. The Patrick Melrose Novels
Edward St Aubyn, Picador, $20, 9780312429966

31. The Wise Man's Fear
Patrick Rothfuss, DAW, $19, 9780756407124

32. The Kitchen House
Kathleen Grissom, Touchstone, $16, 9781439153666

33. A Dog's Purpose
W.Bruce Cameron, Forge, $12.99, 9780765330345

34. Emily, Alone
Stewart O'Nan, Penguin, $15, 9780143120490

35. The Alchemist
Paulo Coelho, HarperOne, $14.99, 9780061122415

36. An Object of Beauty
Steve Martin, Grand Central, $14.99, 9780446573658

37. The Imperfectionists
Tom Rachman, Dial, $15, 9780385343671

38. Open City
Teju Cole, Random House, $15, 9780812980097

39. Turn of Mind
Alice LaPlante, Grove Press, $15, 9780802145901

40. The Descendants
Kaui Hart Hemmings, Random House, $15, 9780812982954

41. The Elegance of the Hedgehog
Muriel Barbery, Europa Editions, $15, 9781933372600

42. Little Bee
Chris Cleave, S&S, $15, 9781416589648

43. West of Here
Jonathan Evison, Algonquin, $15.95, 9781616200824

44. A Secret Kept
Tatiana De Rosnay, St. Martin's, $14.99, 9780312553494

45. Freedom
Jonathan Franzen, Picador, $16, 9780312576462

46. Pulse
Julian Barnes, Vintage, $15, 9780307742407

47. Started Early, Took My Dog
Kate Atkinson, Reagan Arthur, $14.99, 9780316066747

48. Let the Great World Spin
Colum McCann, Random House, $15, 9780812973990

49. Tinkers
Paul Harding, Bellevue Literary Press, $14.95, 9781934137123

50. The Best Exotic Marigold Hotel
Deborah Moggach, Random House, $15, 9780812982428