Quote from introduction:

In this Etymological Vocabulary of the Shughni Group (i.e. Shughni, Bajui, Khufi, Roshani, Bartangi, Oroshori, and Sarikoli) has been included also Yazghulami, which is, in its vocabulary, so closely related to the ShGr., as well as the little which has been recorded from the now extinct Wanji, north of Yazghulami. I have also, as far as possible, referred to words from Badakhshan Tajiki dialects, when suspect of being of ShGr. origin.
(...)
My intention has been to give all words recorded in sources available to me, which I have not been able to trace to Tajiki, Turki, Russian or recent Indo-Aryan, and which may therefore possibly belong to the ancient Ir. strata of the ShGr. vocabulary.

Pamir