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A study of the social and economic implications of the large scale introduction of high-yielding varieties of foodgrains : a selection of readings / António Barreto.
- United Nations Research Institute For Social Development,
- 1971.
- Geneva :
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Science policy in ECE countries : a selective bibliography = Politique scientifique dans les pays de la CEE : bibliographie sélective = Politica cientÃfica en los paÃses de la CEE : bibliografÃa selectiva / United Nations library.
- 84
- United Nations,
- 1971.
- Geneva :
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International directory of co-operative organisations = Répertoire international des organisations coopératives = Repertorio internacional de organizaciones cooperativas
- International Labour Office,
- 1971.
- Geneva :