TY  - BOOK
AU  - Courant R
AU  -  Hilbert D
TI  - Methods of mathematical physics
U1  - B0C, J51.1;17   TB 
PY  - 1937///
CY  - Berlin
PB  - Julius Springer        
KW  -  Physics
KW  - Mathematical physics
N1  - Bibliography 547-550p
ER  -