Agricultural extension V. 2 : examples and background material

Eitemau Tebyg

• Agriculture extension .V .2 examples and back ground material
  gan: Alberchk, Hartmut
• Agricultural extension
  gan: Albrecht,Hartmut
  Cyhoeddwyd: (1987)
• Agricultural extension
  gan: Albrecht,Hartmut
  Cyhoeddwyd: (1989)
• Agricultural extensions V .1. basic concepts and methods
  gan: Albrechel, Hartmut
  Cyhoeddwyd: (1987)
• Agricultural extension .V.1 : basic concepts and methods
  gan: Albrecht, H
  Cyhoeddwyd: (1989)