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illinois state academy of science
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Transactions of the Illinois State Academy of Science
Illinois State Academy of Science · Illinois State Academy of Science [etc.]
Sayfa sayısı yok · 1908
Illinois State Academy of Science / Natural history / Science / Periodicals
Some studies presented at the State Academy of Science in 1940
Illinois State Academy of Science · Illinois State Geological Survey
18 sayfa · 1941
Coal / Coal mines and mining
The conservation research program of the Illinois Natural History Survey
Theodore Henry Frison, Illinois. Natural History Survey Division, Illinois State Academy of Science · State of Illinois
12 sayfa · 1942
Nature conservation