How to organize fertilizer demonstrations and farmers' field days
35 mm positive colour film, 91 frames, text 23 p. + 1 sound cassette in Fr
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| Format: | Texto biblioteca |
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Rome (Italy) FAO
1981
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| Subjects: | FERTILIZER APPLICATION, EXTENSION ACTIVITIES, AUDIOVISUAL AIDS, FERTILISATION, VULGARISATION, APLICACION DE ABONOS, EXTENSION, MOYEN AUDIOVISUEL, MEDIOS AUDIOVISUALES, |
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