Browsing William S. Cordua, Ph.D by Subject "Lapis lazuli"

Now showing items 1-2 of 2

    • Lazulite or Lazurite? 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1999)

    • Michelangelo's minerals 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2006)