TY  - BOOK
AU  - Richtmyer, F.K.
AU  - Kennard, E.H. Ii. Cooper, John N.
TI  - Introduction to modern physics
U1  - 539 6th ed.
PY  - 1955///
CY  - New York
PB  - Mcgraw-Hill Book Company
KW  - Modern Physics
ER  -