Ph\u1ea7n 2 – Ch\u01b0\u01a1ng 3 – B\u00e0i 19: B\u01b0\u1edbc ph\u00e1t tri\u1ec3n m\u1edbi c\u1ee7a cu\u1ed9c kh\u00e1ng chi\u1ebfn to\u00e0n qu\u1ed1c ch\u1ed1ng Ph\u00e1p (1950-1953) (ph\u1ea7n 4)<\/a><\/blockquote><\/iframe>