Allerton Park Institute, University of Illinois at Urbana-Champaign. Graduate School of Library Science, & Bonn, G. S. (1973). Information resources in the environmental sciences: Papers. University of Illinois Graduate School of Library Science.
Citace podle Chicago (17th ed.)Allerton Park Institute, University of Illinois at Urbana-Champaign. Graduate School of Library Science, a George Schlegel Bonn. Information Resources in the Environmental Sciences: Papers. Champaign: University of Illinois Graduate School of Library Science, 1973.
Citace podle MLA (9th ed.)Allerton Park Institute, et al. Information Resources in the Environmental Sciences: Papers. University of Illinois Graduate School of Library Science, 1973.
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