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Fertiliser distribution in the Arab Republic of Egypt / by Ezz El Din Hammam Ahmed and Mohammed Galal Abu El Dahab ; ed. by Eric O. de Guia.
- 861.6
- Organisation for economic co-operation and development (OECD). Development centre,
- 1972.
- Paris :
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A comparative study of fertiliser distribution systems in five developing countries / by Eric O. de Guia.
- 861.6
- Organisation for economic co-operation and development (OECD). Development centre,
- 1972.
- Paris :
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Fertiliser distribution in Chile / by Carlos Clavel and Sergio Maturana ; ed. and comm. upon by Eric O. de Guia.
- 878.7
- Organisation for economic co-operation and development (OECD). Development centre,
- 1972.
- Paris :