Borthwick, D. (2020). Introduction to Partial Differential Equations. 1st ed. Springer International Publishing.
शिकागो स्टाइल उद्धरणBorthwick, David. Introduction to Partial Differential Equations. 1st Ed. Springer International Publishing, 2020.
एमएलए उद्धरणBorthwick, David. Introduction to Partial Differential Equations. 1st Ed. Springer International Publishing, 2020.
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