TY  - BOOK
AU  - Troelstra, A. S.
AU  - 
TI  - Principles of intuitionism; lectures presented at the summer conference on Intutionism and proof theory (1968) at SUNY
T2  - Lecture notes in Mathematics
U1  - 511.3 
PY  - 1969///
CY  - Berlin
PB  - Springer-Verlag
ER  -