Illinois. State Entomologist

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Report Of The State Entomologist On The Noxious And Beneficial Insects Of The State Of Illinois, Volumes 21-22...

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Miscellaneous Essays On Economic Emtomology

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Report Of The State Entomologist On The Noxious And Beneficial Insects Of The State Of Illinois, Issue 24...

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Report Of The State Entomologist On The Noxious And Beneficial Insects Of The State Of Illinois, Issue 20...

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Report Of The State Entomologist On The Noxious And Beneficial Insects Of The State Of Illinois, Volume 12...

Illinois. State Entomologist

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