Abstract

References
1.
Colyer
J. F.
(1942 ) Trans. Brit. Soc. Study Orthodont. , 39 .
2.
Edgar
J. C.
(1933 ) Practice of Obstetrics . Sixth Edition , D. 303. London .
3.
Gerry
R. G.
Sangston
R. E.
(1946 ) Amer. J. Oral Surg. , 32 , 439 .
4.
Liebreich
R.
(1908 ) L'Asymétrie de la Figure et son Origine . Paris .
