studies in agricultural extension and management

Antzeko izenburuak

• Extension communication and management
  nork: G L Ray
  Argitaratua: (1991)
• Extension communication and management
  nork: G L Ray
  Argitaratua: (1991)
• Extension Communication and Management
  nork: G.L.Ray
  Argitaratua: (2017)
• Extension communication and management
  nork: Ray, G L
  Argitaratua: (1991)
• Notes on extension in agriculture
  nork: Ivan G Fay
  Argitaratua: (1962)