TY  - BOOK
AU  - Brouwer, L.E.J.
AU  - Hayting, A.
TI  - Collected works : Vol. 1: philosophy and  foundations of mathematics
U1  - 510 
PY  - 1975///
CY  - Amsterdam
PB  - North Holland Publishing Co.
N1  - Text in English Dutch; SR
ER  -