Greenspan, D. (1961). Introduction to partial differential equations. Tata Mc Graw - Hill.
Chicago Style aipamenaGreenspan, Donald. Introduction to Partial Differential Equations. New Delhi: Tata Mc Graw - Hill, 1961.
MLA aipamenaGreenspan, Donald. Introduction to Partial Differential Equations. Tata Mc Graw - Hill, 1961.
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