CONTACT
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Hermann W. Pfefferkorn
Professor Emeritus
Dept. of Earth & Environmental Science
University of Pennsylvania
Philadelphia, PA, 19104-6316, USA
For parcels or express mail add:
251 Hayden Hall
240 South 33rd Street
Office and lab: 59-B Hayden Hall
Email Address: hpfeffer [at] sas.upenn.edu
Click here for Hermann Pfefferkorn's web page on the departmental web page