Chapter 3 Photo Credits

• Edgar Fahs Smith Collection, University of Pennsylvania Library

  Justis von Liebig Henri le Châtelier

• Corel® Stock Photos

  Aerial, La Jolla  used in Carbon Cycle diagram Camp on Mount Everest, Himalayas

• Humboldt Universitat zu Berlin  http://www.chemie.hu-berlin.de

  Fritz Haber

• NASA Image Exchange

  olympus.jpg electrolysis.jpg marsroverrepair.jpg

• All other photography and artwork is Copyright © 2000 Digipac Microcomputer Software Ltd.