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Dear colleagues, Receive a cordial greeting. I'm looking for this paper in PDF: Heinrich, B. & G. A. Bartholomew. 1979. Roles of endothermy and size in inter- and intraspecific competition for elephant dung in an African dung beetle, Scarabaeus laevistriatus. Physiol. Zool. 52: 484-496. Thank you in advance for your help. Best wishes, Jorge Ari Noriega Department of Biogeography and Global Change National Museum of Natural Science (CSIC) C/José Gutiérrez Abascal 2 28006 - Madrid SPAIN