Br̥hadāraṇyakopaniṣat : Pratipadārthadīpikā-Prakāśikā-Ānanda-Subodhinyākhya bhāṣyacatuṣṭayopetā

V. 1. Tr̥tīyādhyāyataḥ pañcamādhyāya paryantam -- v. 2. Ṣaṣṭhādhyāyataḥ aṣṭamādhyāya paryantam.
Critical edition of Hindu philosophical classic with four commentaries i. e. Pratipadārthadīpikā by Bhāradvāja Rāmanujācārya, Prakāśikā by Raṅgarāmānujamuni, Ānandabhāṣya by Rāmānandamuni, and Subodhinī by Gopālanandayogi - all belonging to the period from 14th to 18th century A.D