TY  - BOOK
AU  - Kac Mark
AU  -  Rota G C
AU  -  Schwartz J T
TI  - Discrete thoughts: essays on mathematics, science and  philosophy
U1  - Az7, N2 
PY  - 1992///
CY  - Boston
PB  - Birkhauser         
KW  - Science essays
ER  -