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Hopkins, Cyril G. 1866-1919 The Farm That Won't Wear Out
 Hopkins, Cyril G. 1866-1919 The Farm That Won't Wear Out
Hopkins, George Ralph's Possession
 Hopkins, George Ralph's Possession
Crandell, Helen Hopkins Silas Marner (george Eliot)
 Crandell, Helen Hopkins Silas Marner (george Eliot)
Hopkins, Cyril George Soil Fertility and Permanent Agriculture
 Hopkins, Cyril George Soil Fertility and Permanent Agriculture
Hopkins, Cyril George Summary of Illinois Soil Investigations
 Hopkins, Cyril George Summary of Illinois Soil Investigations
Hopkins, Cyril G 1866-1919 The Sugar Beet in Illinois
 Hopkins, Cyril G 1866-1919 The Sugar Beet in Illinois
George Hopkins, Cyril