TY  - BOOK
AU  - Whitehead,Alfred North
AU  - Russell,Bertrand
TI  - Principia mathematica,
AV  - QA9 .W5 1925
PY  - 1925///-1927
CY  - Cambridge [Eng.]
PB  - The University Press
KW  - Mathematics
KW  - Philosophy
KW  - Logic, Symbolic and mathematical
ER  -