On-Farm Experimentation Handbook For Rural Development Projects. Guidelines for the development of ecological and socioeconomic sound extension message for small farmers - Tapa blanda

 
9783880853423: On-Farm Experimentation Handbook For Rural Development Projects. Guidelines for the development of ecological and socioeconomic sound extension message for small farmers

Sinopsis

1987 307 S. Paperback/ broschiert TZ-Verlagsgesellschaft Rossdorf,

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