|
‘Quiescent centre theory’ was proposed by |
|||||||
|
a) |
Nagelli |
b) |
Schmidt |
c) |
Hanstein |
d) |
Clowes |
|
‘Quiescent centre theory’ was proposed by |
|||||||
|
a) |
Nagelli |
b) |
Schmidt |
c) |
Hanstein |
d) |
Clowes |