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Historical Sketch of the generic names proposed for butterflies, A contribution to systematic nomenclature - Scudder, Samuel Hubbard, 1837 -1911 (Naturalist's Agency, 1875)

Historical zoogeography and current status of two species of hybridizing ground squirrels (Ictidomys parvidens and I. tridecemlineatus) on the southern plains of Texas - Stangl, Frederick B., Jr. (Museum of Texas Tech University, 2012)

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hua bei qu zi tan di li zi liao - zhong hua di li zhi bian ji bu (ke xue chu ban she, 1957)

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