Proceedings of the 4th International Congress of Acarology. Saalfelden, August, 1974 - Proceedings of the International Congress of Acarology 4. (Budapest, 1979)

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Piffl, Eduard (szerk.): Proceedings of the 4th International Congress of Acarology. Saalfelden, August, 1974 - Proceedings of the International Congress of Acarology 4. (Budapest, 1979)