TY  - BOOK
AU  - Kreyszig, Erwin
TI  - Differential Geometry
SN  - 9780486667218
U1  - 516.7 
PY  - 1991///
CY  - New York 
PB  - Mc Graw Hill 
KW  - Mathematics
N1  - Includes Index and Bibliographies
ER  -