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Books by Gladys Zehnpfennig

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Charles F. Kettering: inventor and idealist;: A biographical sketch of a man who refused to recognize the impossible (Men of achievement series)
🇺🇸 United States
Charles F. Kettering: inventor and idealist;: A biographica…
By: Gladys Zehnpfennig
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Hubert H. Humphrey, champion of human rights (Men of achievement series)
🇺🇸 United States
Hubert H. Humphrey, champion of human rights (Men of achiev…
By: Gladys Zehnpfennig
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