80/20 Principle : Achieve more with less

Ижил төстэй зүйлс

• The 80/20 Principle: The Secret of Achieving More with Less
  -н: Koch, Richard
  Хэвлэсэн: (2008)
• 80/20 Principle: The Secret of Achiving More With Less
  -н: Koch, Richard
  Хэвлэсэн: (2008)
• The 80/20 Principle the secret of achieving more with less
  -н: Koch, Richard
• LIVING THE 80 20 WAY: WORK LESS WORRY LESS
  -н: KOCH RICHARD
  Хэвлэсэн: (2005)
• THE 80/20 PRINCIPLES
  -н: KOCH RICHARD
  Хэвлэсэн: (2017)