A. Topo sequence
B. Catena
C. Chrono sequence
D. Topography
Submitted by: Muhammad hakeem
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
