The effect of elementary school students' volunteer activities and self-development activities on subjective happiness and the mediating effect of leadership life skills (초등학생의 자원봉사활동과 자기개발 활동이 주관적 행복감에 미치는 영향과 리더십 생활기술의 매개효과 검증)
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- Journal of Industrial Convergence
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- v.20 no.3
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- pp.89-97
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- 2022