dct:bibliographicCitation
| - Boudot, J., Jacquemin, G. & Dumont, H. 1990. Revision of the subspecies of Onychogomphus forcipatus (Linnaeus, 1758) in Europe and Asia Minor, and the true distribution of Onychogomphus forcipatus unguiculatus (Vander Linden, 1823) (Odonata, Gomphidae). <em>Bulletin & Annales de la Societe Royale Belge d'Entomologie</em>, 126(7-9): 95-111.
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