I posted about the work by Reed Johnson back in April. It's in the archives

Synergistic Interactions Between In-Hive Miticides in Apis mellifera
Authors: Johnson, Reed M.; Pollock, Henry S.; Berenbaum, May R.
Source: Journal of Economic Entomology, Volume 102, Number 2, April 2009 , pp. 474-479(6)

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