manvantarani
manvantarāṇi — the reign of the Manus; SB 2.10.4
manvantarāṇi — different advents of Manus; SB 3.10.30
manvantarāṇi — periods of Manu; SB 8.14.11
manvantarāṇi — all about the periods of the various Manus; SB 9.1.1