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Cox, James M. "Robert Frost and the Edge of the Clearing." Critical Essays on Robert Frost. The Virginia Quarterly Review. (1959): 144-154.
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Traschen, Isadore. "Robert Frost: Some Divisions in a Whole Man." Critical Essays on Robert Frost. Yale Review. (1965): 170-180.
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Doyle, John Robert. The Poetry of Robert Frost, an Analysis. Johannesburg: Witwatersrand University Press, 1962.
"Fire and Ice"