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 Essex Naturalist (New Series), No. 19 (2002)

The picture winged fly Dorycera graminum (F.) (Diptera, Ulidiidae) in abundance at a threatened site in West Thurrock, with records from other sites in South Essex

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Reference: Harvey, P. (2002) The picture winged fly Dorycera graminum (F.) (Diptera, Ulidiidae) in abundance at a threatened site in West Thurrock, with records from other sites in South Essex Essex Naturalist (New Series), No. 19: 76-78.

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