Improving supervisory performance

Eitemau Tebyg

• Improving supervisory performance /
  gan: Bittel, Lester R.
  Cyhoeddwyd: (1976)
• Improving supervisory performance
  gan: Bittel, Lester R.
  Cyhoeddwyd: (1976)
• Improving Supervisory Performance
  gan: Bittel,Lester R
  Cyhoeddwyd: (1976)
• What every supervisor should know ? : the basics of supervisory management
  gan: Bittel, Lester R
  Cyhoeddwyd: (1985)
• What every supervisor should know: the basics of supervisory management
  gan: Bittel, Lester R
  Cyhoeddwyd: (1990)