Queen's Gambit Declined, The Sensei Speedrun

opening - In the Queen's Gambit Declined, why is 5.e3 so much more popular than 5.Nf3 after 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7? - Chess Stack Exchange

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Opening Repertoire: Queen's Gambit Declined - Tarrasch: Lakdawala, Cyrus: 9781781946961: : Books