TY  - BOOK
T1  - Principia mathematica : to *56,
DA  - 1962.
CY  - Cambridge [Eng.]
AU  - Whitehead, Alfred North,
AU  - Russell, Bertrand,
ET  - [Paperback ed.]
CN  - QA9
CN  - QA9
PB  - University Press,
PP  - Cambridge [Eng.]
PY  - 1962.
N1  - Abridged text of v. 1 of Principia mathematica.
ID  - 63117
KW  - Mathematics
KW  - Logic, Symbolic and mathematical.
TI  - Principia mathematica : to *56,
ER  -