AGNEW, R. P. (1960). Differential equations. Mc@raw-Hill.
Tohutoru Kātū Chicago (17th ed.)AGNEW, Ralph Plamer. Differential Equations. New York: Mc@raw-Hill, 1960.
Tohutoro MLA (9th ed.)AGNEW, Ralph Plamer. Differential Equations. Mc@raw-Hill, 1960.
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