Agriculture extension

Antzeko izenburuak

• Agricultural extension
  nork: H S Hawkins, et al.
  Argitaratua: (1996)
• Agricultural Extension
  nork: A W Van Den Ban H S Hawkins
  Argitaratua: (1998)
• Agricultural extension
  nork: AW van den Ban
  Argitaratua: (1998)
• Agricultural extension
  nork: Ban, A W VAn Den
  Argitaratua: (1988)
• Agricultural extension
  nork: Van Den Ban, A W
  Argitaratua: (1996)