IOBC-WPRS Bulletin Vol. 11 (5), 1988

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Proceedings of the 4th meeting of the Subgroup on integrated pest and disease control in hops of the Working Group: "Integrated Protection in Orchards",
East Malling (United Kingdom), 25-27 August 1987.
Edited by C.A.M. Campbell & I. Hrdý.
ISBN 92-9067-016-9 [99 pp.].

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