50.ब्रह्मसूत्र - अ.1, पा.1, अधि.4. सूत्र 4,स्वामी मोहनानन्द पुरी जी महाराज 

प. पू. म. मं. स्वामी श्री विश्वात्मानन्दपुरीजी, साधना सदन हरिद्वार
Param Pujya MahamandeleshvarSwami Vishwatmanand Puri ji
Sadhana Sadan, Mayapur, Haridwar, Uttarakhand 249408
Mandukyopanishad book download links
Mahesh Reserach Institute (Varanasi)
Bhagvan Shankar Bhashyam Anandgiri Tika (naturally with Gaudapadas Karika)
archive.org/de...
Mandukyopanshad from Kailash Ashram with Gaudapadas Karika , Shankar Bhashyam (hindi translated) ia801207.us.ar...