TY  - BOOK
AU  - Pontrjagin Lev S.
AU  -  Hewitt Edwin Tr.
TI  - Learning Higher Mathematics
T2  - Springer series in savit mathematics
U1  - B, M41 
PY  - 1984///
CY  - Berlin
PB  - Springer-Verlag         
KW  - Mathematics
ER  -