TY  - BOOK
AU  - Pogorelov, A. V.
TI  - Differential geometry
U1  - 516.7 POG 
PY  - 1967///
CY  - Groningen
PB  - P. Noordhoff
KW  - Geometry, Differential
N1  - Includes bibliographical references (p. 173)
ER  -