Logg på
JAMB - Geography (1990 - No. 26)
The problems of irregular levels of water in river navigation may be solved by?
straightening river courses
controlling the currents
providing dams, canals and locks
changing the diretion of river flow
Kommentarer (0)
Logg inn for å kommentere
Annonse
Tillat at javascript laster denne siden ordentlig
