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Gregg, R. E. 1946. The ants of northeastern Minnesota. American Midland Naturalist 35:747-755. PDF
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Gregg, R. E. 1947. Altitudinal indicators among the Formicidae. University of Colorado Studies. Physical and Biological Sciences 2:385-403.
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Gregg, R. E. 1948. An unusual nest of the prairie mound-building ant (Hymenoptera, Formicidae). Proceedings of the Entomological Society of Washington 50:183-186.
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Gregg, R. E. 1950. A new species of Pheidole from the Southwest. Journal of the New York Entomological Society 58:89-93. PDF
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Gillison, A. N.; Anderson, D. J. (eds.) 1981. Vegetation classification in Australia. Canberra: C.S.I.R.O. & Australian National University Press, xxi + 229 pp.
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Barker, W. R.; Greenslade, P. J. M. (eds.) 1982. Evolution of the flora and fauna of arid Australia. Frewville, South Australia: Peacock Publications, 392 pp.
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Greenslade, P. J. M. 1979. A guide to ants of South Australia. Adelaide: South Australian Museum (Special Educational Bulletin Series), 44 pp.
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