Title: Rgyud rgyal gsaṅ sñiṅ skor bźugs
Description: On essence of Buddhist Tantra according to Nyingma tradition.
Subjects: Doctrines, Tantric Buddhism, Rñiṅ-ma-pa (Sect), History and criticism, Rnying-ma-pa (Sect), Tripiṭaka
Places: China, Tibet Autonomous Region