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The reality of class struggle broke upon history with the same brutality as the reign of economics , which had suddenly emerged as the focus of all preoccupations . The son of struggling European immigrants , Cooper was largely autodidactic , with a natural talent as an inventor , and even as a 17 year old apprentice-carriage maker , he put that talent to work . In addition to his work on the maintenance , breeding and conservation of turtles , which includes several publications , Elmar is also responsible for a broadly planned landscape approach to nature conservation project , with the European tree-frog as a flagship species for the preservation of threatened species in the Westphalian farmed landscape . The names which were with infinite slowness revealed , seemed strange and stranger still ; the colors not bright but deathly dull ; the separate letters , spelling out the names of the dead among them , did not seem to glow or shine with a festive sheen as did the other living names . The misleading impression must be corrected at the same time and with the same impact as the initial representation .