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yang zhi zuo zuo yi ju san de
Pages: 62-63
Year: Issue:  3
Journal: Green Leaves

Abstract: <正> 盈利行业近几年,美国的蚯蚓养殖业兴旺起来,其中最大的蚯蚓养殖企业养殖5000万条蚯蚓,它们每周吃掉大约90吨垃圾。俄亥俄州为了适应这个行业的迅速发展,300个大型蚯蚓养殖企业1997年早些时候组成了国际蚯蚓养殖者协会,以帮助促进这个行业。健康卫士
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