https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2024-1%ED%95%99%EA%B8%B0-%2F-2024-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2024-1%ED%95%99%EA%B8%B0-%2F-2024-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2022-1%ED%95%99%EA%B8%B0-%2F-2022-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2021-1%ED%95%99%EA%B8%B0-%2F-2021-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2018-1%ED%95%99%EA%B8%B0-%2F-2018-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2017-1%ED%95%99%EA%B8%B0-%2F-2017-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2016-1%ED%95%99%EA%B8%B0-%2F-2016-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2015-1%ED%95%99%EA%B8%B0-%2F-2015-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2023-1%ED%95%99%EA%B8%B0-%2F-2023-2%ED%95%99%EA%B8%B0 2026-03-02 https://www.ysbkeng21.org/other-events/%ED%95%B4%EC%99%B8-%EC%97%B0%EC%88%98-%EC%A7%80%EC%9B%90-%EB%82%B4%EC%97%AD-2024-1%ED%95%99%EA%B8%B0-%2F-2024-2%ED%95%99%EA%B8%B0 2026-03-02