TY  - BOOK
AU  - Richtmyer,F.K.
AU  - Kennard,E.H.
AU  - Lauritsen,T.
AU  - Schiff,Leonard I.
TI  - Introductionto modern physics / 
U1  - 539 RIC 
PY  - 1955///
CY  - New York : 
PB  - Mc Graw-Hill Book Company, Inc., 
KW  - Modern physics-History
KW  - Relativity, theory
ER  -