Outlines the principles and observations behind this law, and provides the relevant equations. Includes explanatory diagrams.

June, 1998, article from this subscription periodical talks about the life and career of this chemist who determined the formula for water.

Scrutinize a one paragraph profile of this chemist who proposed a law about molecule ratios. Offers a link to the National Mole Day Foundation.

Italian institution provides a biography of Count Avogadro and summarizes his principle achievements in physics and chemistry.

Columbia Encyclopedia provides a brief summary of the aristocratic chemist's life and work.