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Ch. Neumann, M. Kon, K. Araya. 2013.
Checklist of Passalidae Leach, 1815 (Coleoptera, Scarabaeoidea) of Laos with a key to their identification and a description of Leptaulax pacholatkoi mutoniatus ssp. nov.
Entomologica Basiliensia et Collectionis Frey, 2013, 34: 207-235.
ISSN 1661.8041