Many important editorial changes enhance the '2016 Scott specialized catalogue of United States stamps and covers'.

Contains current market prices for the United States, U.S. Possessions and trust territories Canada and provinces, and all United Nations. Includes U.S. commemorative index and colorful stamp identifier, grading criteria, and more for the United States and British North America. Full Color

Contains 33 chapters embracing both the continental as well as offshore geology of South Africa. Arranged in ascending order from the oldest formations in the Barberton granite-greenstone terrane to the coastal and interior Mesozoic and Cenozoic deposits that developed following the breakup of the Gondwana supercontinent. Also provides a broad framework covering the geological setting and environment of the varied mineral resources encountered throughout the region.