501.G. Whitney Azoy
502.J.E. Coates
503.Muhammad Yunus
504.Dalai Lama
505.Mary Robinson
506.Oscar Arias S¨¢nchez
507.Cecil Clutton
508.Arthur K. Wheelock
509.Stephen J. Wright
510.Gary Dickson
511.Sister Wendy Beckett
512.Bernard M.J. Wasserstein
513.John Szarkowski
514.Philip R. Davies
515.Gerhard L. Closs
516.Jack Henningfield
517.David T. Sweanor
518.Richard Routledge
519.Noor al-?ussein
520.Ian C. Clingan
521.Ahmed S. Al-Shahi
522.Howard F. Cline
523.Karl W. Birkeland
524.Robert W. Peterson
525.C.L. Cline
526.Donald Share
527.Allan H. Meltzer
528.Barbara Lovett Cline
529.Lorraine Elliott
530.Rusty Frank
531.Paul R. Clifford
532.M.G. Lord
533.S. Tom Picraux
534.Jim Smyth
535.David Boaz
536.Roger Hood
537.Derek Plint Clifford
538.John Zukowsky
539.Mary Heimerdinger Clench
540.Richard Verdi
541.Harvey Mansfield
542.Gerald M. Clemence
543.Edward McSweegan
544.Richard Kraut
545.Wayne M. Clegern
546.Bruce J. Caldwell
547.Michael Oriard
548.William L. Andrews
549.Sir Stanley George Clayton
550.John E. Woods