TY  - BOOK
AU  - Yano,K
AU  - Bochner,S.
TI  - Curvature and Betti numbers
PY  - 1953///
CY  - Princeton
PB  - The University Press
KW  - Curvature
KW  - Geometry, Differential
N1  - Bibliography : p. 187-190
ER  -