TY  - BOOK
AU  - Butzer, P L, ed.
TI  - On approximation theory: Proceedings of the conference held at the mathematical research institute at Oberwolfach, black forest, August 4-10, 1963
U1  - 511.4 B985O 
PY  - 1972///
CY  - Verlag
PB  - [n.p.]
ER  -