TY  - BOOK
AU  - Yaglom I M
TI  - Simple non-euclidean geometry and its physical basis
T2  - Heidelberg science library
U1  - B6M, L9 
PY  - 1979///
CY  - New York    
PB  -  Springer Verlag       
KW  -  Non euclidean geometry
KW  - Mathematics
N1  - Bibliography 294-302p
ER  -