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Proceedings of the international workshop on the cassava mealybug, phencoccus manihoti mat-ferr. (pseudococcidae), held at INERA-M'vuazi, Bas-Zaire, Zaire, June 26-29, 1977 / ed. by Kanayo F. Nwanze and Klaus Leuschner.
- International institute of tropical agriculture,
- 1978.
- Ibadan :