Challenges of the twenty first century /

Eitemau Tebyg

• Challenges of the twenty first century /
  Cyhoeddwyd: (2010)
• Challenge of our times : Contemporary trends in science and human affairs as seen by twenty professors at the University of Wisconsin. /
• Management challenges in twenty first century /
  Cyhoeddwyd: (1999)
• Management challenges in twenty-first century
  gan: Vivek Deolankar; Editor
  Cyhoeddwyd: (1999)
• Islam: challenges in twenty-first century
  gan: Engineer, Asghar Ali
  Cyhoeddwyd: (2004)