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2 유덕기, "유기축산을 위한 농장동물복지의 과제와 평가" 한국유기농업학회 15 (15): 237-256, 2007
3 최희철, "외국의 동물복지형 산란계 사육시스템의 변화와 우리의 과제" 2008
4 조광호, "동물복지축산:동향과 우리의 대응" 2005
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