"Nothing in the osteometric data shows that relationships existed between the populations of the Oxus Civilization and those of the steppes: these populations are separate, different. This would prove that if there were migrations, they were not significant at that time. Mixtures of steppe and oasis populations do not become significant until the time when corpses disappear through cremation or exposure."
January 1, 1970
https://en.wikiquote.org/wiki/Genetics_and_archaeogenetics_of_South_Asia