University of Illinois Urbana-Champaign

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Showing 3841–3870 of 4,817 items
Thumbnail for Geology and geography of the Galena and Elizabeth Quadrangles.
Geology and geography of the Galena and Elizabeth Quadrangles.
Trowbridge, Arthur C.; Shaw, Eugene Wesley; Schockel, Bernard Henry

Thumbnail for The Mecoptera, or Scorpionflies, of Illinois
The Mecoptera, or Scorpionflies, of Illinois
Webb, Donald W.; Penny, Norman D.; Marlin, John C.