TY  - JOUR
T1  - On Mathematical Concepts of the Material World
JF  - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934)
VL  - 77
IS  - 517
SP  - 290
EP  - 291
PY  - 1906/03/29/
UR  - http://dx.doi.org/10.1098/rspa.1906.0026
M3  - doi:10.1098/rspa.1906.0026
AU  - Whitehead, A.
ER  -