1 “... studies of the archaeology, art, culture, geography, geology, history, language, law, literature, music...”

2 “... of American natural science by focusing on three representative scientists-geologist who purposefully...”

3 “... changes in our current climate and those in the geological past. The book gives a required elementary...”

4 “...On the Edge of Eternity overturns the paradigm of the eighteenth-century discovery of geological...”