This is a separate, second bibliography focused specifically on learning the languages Buddhist texts were written in, rather than books about Buddhism itself — see the main bibliography for that. Same access approach as the main list: each title links to a WorldCat and Internet Archive search rather than any download — an Archive.org result of "0 results" just means that title isn't in their collection, not a broken link.

On Hindi coverage: Hindi-language pedagogical materials for Pali are well documented (Bhikkhu Jagdish Kashyap's foundational work, in particular). Hindi-language grammars specifically for Tibetan, Chinese and Buddhist Hybrid Sanskrit are far less catalogued internationally — if you know of specific titles, they're very welcome additions.