TY  - BOOK
AU  -  HU,Shih-chen
TI  -  Differential manifolds
U1  -  514.7 HUS 
PY  - 1969///,
CY  -  New York: 
PB  -  Holt, Rinehart and Winston , 
KW  -  Differential topology
N1  -  Includes bibliography: p. 169-170
ER  -