By "multiracial" the author means, "there aren't enough remains to make any such determination; no genetic studies have been made; that race is actually nonexistent; and I'm just spouting propaganda."
Catal Huyuk:The oldest layer of Catal Huyuk yet excavated (virgin soil has not been reached) is reliably carbon dated to 6,500 B.C,, and reveals a thriving, completely developed and planned, city... Twelve successive layers of building, representing distinct stages of the city and reflecting different eras of its history, have been found. The top layers of the mound, containing the most recent buildings, are dated at 5,600 B.C... At a time when a "big" town like early Hacilar had ten houses, Catal Huyuk was a multiracial city of 6,000 people.
The Temple City of Prehistoric Anatolia
by Wllliam Carl Eichman
Gnosis Magazine Spring 1990
very interesting "landscape painting".