TY  - BOOK
AU  - Gelbaum, Bernard R
AU  - Olmsted, John M.H,
TI  - Theorems and counterexamples in Mathematics
T2  - Problem books in Mathematics
SN  - 9788184895438
U1  - 510 
PY  - 1990/// - R 2010
CY  - USA
PB  - Springer
ER  -