TY  - BOOK
AU  - Kagan, V. .
TI  - N.Lobachevsky and Contribution to Science
U1  - 925 
PY  - 1957///
CY  - Moscow
PB  - Foreign Language Publishing House
KW  - Biography-Scientists
KW  - Biography-N.Lobachevsky
KW  - G-Biography
ER  -