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1LiburuaArgitaratua 1977“...WHO Expert Group on Pesticide Residues...”
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2Conference Proceeding LiburuaArgitaratua 1991“... and the WHO Expert Group on Pesticide Residues Geneva, Switzerland...”
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3Conference Proceeding LiburuaArgitaratua 1993“... and the WHO Expert Group on Pesticide Residues, Rome, Italy...”
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4Conference Proceeding LiburuaArgitaratua 1986“... WHO Expert Group on Pesticide Residues. Geneva, Switzerland...”
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5Conference Proceeding LiburuaArgitaratua 1975“...WHO Expert Group on Pesticide Residues...”
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6Conference Proceeding LiburuaArgitaratua 1973“...WHO Expert Group on Pesticide Residues...”