Carleton S. Coon was an American anthropologist and writter of some famous racialist works. More information about his life and works: HERE
His work The Races of Europe still considered today as of the most in-depth and detailed work on European Tribes and Nations.
You can find this book online at this link :
Coming to modern Hellas, amongst others Carleton Coon wrote :
"As will be shown later (Chapter XI, section 14), the modern inhabitants of Greece itself differ surprisingly little from their classical predecessors."
"The Greeks, in short, are a blend of racial types, of which two are most important; the Atlanto-Mediterranean and the Alpine. Dinaricisrn here is present, but not all pervading; true Alpines are commoner than complete Dinarics. The Nordic element is weak, as it probably has been since the days of Homer. The racial type to which Socrates belonged is today the most important, while the Atlanto-Mediterranean, prominent in Greece since the Bronze Age, is still a major factor, it is my personal reaction to the living Greeks that their continuity with their ancestors of the ancient world is remarkable, rather than the opposite."
"It is inaccurate to say that the modern Greeks are different physically from the ancient Greeks; such a statement is based on an ignorance of the Greek ethnic character. In classical times the Greeks included many kinds of people living in different places, as they do today. If one refers to the inhabitants of Attica during the sixth century, or to the Spartans of Leonidas, then the changes in these localities have probably not been nearly as great as that between the Germans of Tacitus and the living South Germans, to cite but a single example."