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43by Pontri͡agin, L. S (Lev Semenovich), 1908-1988
Published 1962
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46Chang wei fen fang cheng (di 6 ban) /常微分方程 (第6版) /by Pontri͡agin, L. S (Lev Semenovich), 1908-1988
Published 2016
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59by Pontri︠a︡gin, L. S (Lev Semenovich), 1908-1988Other Authors: “...Pontri͡agin, L. S (Lev Semenovich), 1908-1988...”
Published 1977
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