TY  - JOUR
T1  - Mathematical Contributions to the Theory of Evolution.--X. Supplement to a Memoir on Skew Variation. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 68
SP  - 372
EP  - 373
PY  - 1901/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1901.0060
M3  - doi:10.1098/rspl.1901.0060
AU  - Pearson, K.
ER  -