In one kalpa, or one day of Brahma, there take place the many changes called vikalpas. O King (Pariksit), all of these have been previously described to you by me - Sukadeva Gosvami

Expressions researched:
"In one kalpa, or one day of Brahma, there take place the many changes called vikalpas. O King, all of these have been previously described to you by me"

Srimad-Bhagavatam

SB Canto 8

In one kalpa, or one day of Brahma, there take place the many changes called vikalpas. O King, all of these have been previously described to you by me.

SB 8.14.11, Translation

In one kalpa, or one day of Brahmā, there take place the many changes called vikalpas. O King, all of these have been previously described to you by me. Learned scholars who know the past, present and future have ascertained that in one day of Brahmā there are fourteen Manus.