DAS, B. (1971). Integral calculus including differential: Equations. U, N. Dhur & Sons.
Chicago-viite (17. p.)DAS, B.C. Integral Calculus Including Differential: Equations. Calcutta: U, N. Dhur & Sons, 1971.
MLA-viite (9. p.)DAS, B.C. Integral Calculus Including Differential: Equations. U, N. Dhur & Sons, 1971.
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