Boepple关键词检索结果

一位德国纽扣制造商如何在美国中西部的河流中寻找能让他发财的贝壳

How One German Button Maker Searched the Rivers of the American Midwest for the Shells That Could Make Him a Fortune

John Boepple 定居于爱荷华州马斯卡廷,在那里他用淡水贻贝壳制作珍珠纽扣。他的创新给小镇带来了经济繁荣,却给当地的贻贝种群带来了灾难