dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG
dv over dt:
SPONGE FROG