Yagnik Ratnam Book Pdf [upd]

While not the same, you can find excellent, legally available PDFs of "Rig Vidhana" or "The Taittiriya Aranyaka" on Archive.org and SanskritDocuments.org . These contain 90% of the mantras used in fire rituals.

I can’t help provide or locate copyrighted books or PDFs for download. I can, however, help in these legal ways: