Matches in DBpedia 2014 for { ?s ?p Gerard Troost (March 5, 1776 – August 14, 1850) was an American-Dutch medical doctor, naturalist, mineralogist, and founding member and first president of the Philadelphia Academy of Natural Sciences.. }
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- Gerard_Troost abstract "Gerard Troost (March 5, 1776 – August 14, 1850) was an American-Dutch medical doctor, naturalist, mineralogist, and founding member and first president of the Philadelphia Academy of Natural Sciences.".
- Gerard_Troost comment "Gerard Troost (March 5, 1776 – August 14, 1850) was an American-Dutch medical doctor, naturalist, mineralogist, and founding member and first president of the Philadelphia Academy of Natural Sciences.".