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Reynolds, R. E. 2011. The incredible shrinking Pliocene, and Abstracts of Proceedings: the 2011 Desert Symposium. Fullerton: California State University Desert Studies Consortium, 136 pp.
Reza, A. 1925. Recursos alimentícios de México de origen animal poco conocidos. Memorias y Revista de la Sociedad Científica "Antonio Alzate" 44:1-22. PDF
Reznikova, Z. I. 1980. Stability of the structure of multispecific associations of steppe ants in different natural zones. [In Russian.]. Trudy Biologicheskogo Instituta (Novosibirsk) 40:116-130.

Notes: Signed for printing ("podpisano k pechati") 19 December 1979. Title page dated 1980.

Reznikova, Z. I.; Samoshilova, N. M. 1981a. The role of ants as predators in steppe biocenoses. [In Russian.]. Ekologiya (Moscow) 12(1):69-75.

Notes: Date signed for printing ("podpisano k pechati"). Translated in Sov. J. Ecol. 12:55-60. See Reznikova & Samoshilova (1981b).

Reznikova, Z. I.; Samoshilova, N. M. 1981b. The role of ants as predators in steppe biocenoses. Soviet Journal of Ecology 12:55-60.

Notes: English translation of Reznikova & Samoshilova (1981a).

Reznikova, Z. I.; Shillerova, O. A. 1979. Ecology and behavior of Formica uralensis in the dry steppes of Tuva. [In Russian.]. Voprosy Ekologii. Novosibirskii Gosudarstvennyi Universitet 5:112-131.
Rhoades, R. B. 1977. Medical aspects of the imported fire ant. Gainesville: University of Florida Press, 75 pp.
Rice, H. M. A. 1947. Geology and mineral deposits of the Princeton map-area, British Columbia. Geological Survey of Canada. Memoirs 243:1-136.

Notes: Page 31: ants (Formicidae; not further identified), as fossils in Princeton sediments of Eocene or Oligocene age.

Richards, O. W. 1956. Hymenoptera. Introduction and key to families. Handbooks for the Identification of British Insects 6(1):1-94.
Richards, O. W. 1977. Hymenoptera. Introduction and key to families. Handbooks for the Identification of British Insects 6(1)(2nd edn.):1-100.
Riemann, H. 1987a. Bienen, Wespen und Ameisen (Hymenoptera Aculeata) als Besiedler von Böschungen an tiefliegenden Entwässerungsgräben. Abhandlungen herausgegeben vom Naturwissenschaftlichen Verein zu Bremen 40:333-346.