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Lua i Stíl Chicago (17ú heag.)International Symposium on Heavy Metals and Pesticide Residues in Medicinal, Aromatic and Spice Plants Novi Sad, Yugoslavia, agus Ján Kišgeci. International Symposium on Heavy Metals and Pesticide Residues in Medicinal, Aromatic and Spice Plants: Novi Sad, Yugoslavia, 25-28 May, 1988. Wageningen, Netherlands: International Society for Horticultural Science, 1989.
Lua MLA (8ú heag.)International Symposium on Heavy Metals and Pesticide Residues in Medicinal, Aromatic and Spice Plants Novi Sad, Yugoslavia, agus Ján Kišgeci. International Symposium on Heavy Metals and Pesticide Residues in Medicinal, Aromatic and Spice Plants: Novi Sad, Yugoslavia, 25-28 May, 1988. International Society for Horticultural Science, 1989.