Srimad Bhagavatam

References to text SB 12.3.52
SB 12.3.52: Whatever result was obtained in Satya-yuga by meditating on Viṣṇu, in Tretā-yuga by performing sacrifices, and in Dvāpara-yuga by serving the Lord’s lotus feet can be obtained in Kali-yuga simply by chanting the Hare Kṛṣṇa mahā-mantra.

Text №
New York, December 23, 1966
LCC 2.20.330
New York, December 24, 1966
LCC 2.20.334
New York, December 24, 1966
LCC 2.20.334
New York, December 25, 1966
LCC 2.20.337