GWENN SCHWERDEL
Recently retired, Gwenn Schwerdel excelled for years as the lead certifying scientist and education coordinator for Truetox Laboratories, LLC.
Recently retired, Gwenn Schwerdel excelled for years as the lead certifying scientist and education coordinator for Truetox Laboratories, LLC.
Marquis Who’s Who was established in 1898 and promptly began publishing biographical data in 1899. More than 120 years ago, our founder, Albert Nelson Marquis, established a standard of excellence with the first publication of Who’s Who in America.