Ayres, F. (1952). Schaum's outline of theory and problems of differential equations. Schaum.
Cita Chicago Style (17a ed.)Ayres, Frank. Schaum's Outline of Theory and Problems of Differential Equations. New York: Schaum, 1952.
Cita MLA (9a ed.)Ayres, Frank. Schaum's Outline of Theory and Problems of Differential Equations. Schaum, 1952.
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