A Comprehensive Introduction to Nostratic Comparative Linguistics

A Comprehensive Introduction to Nostratic Comparative Linguistics (2nd edition — revised as of October 2015) (4 volumes, 2,562 pages, combined into a single PDF).

By Allan Bomhard 

The latest in-depth treatment by Allan R. Bomhard of the Nostratic Hypothesis (2nd edition 2015). All aspects (phonology, morphology, vocabulary, homelands, etc.) of Nostratic are covered. Voluminous references are given to the relevant literature.