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5Origins of pest, parasite, disease and weed problems - (Proceedings of) the 18. Symp. of British Ecological Society Origins of pest, parasite, disease and weed problems - (Proceedings of) the 18. Symp. of British Ecological Societyby Cherrett, J.M., British Ecological Society, Abbot's Ripton, Hunts. eng, British Ecological Society. Symp eng 12 Apr 1976 18 Bangor (UK) 9853, Sagar, G.R.
Published 1977Texto bibliotecaFAO IT