TY  - BOOK
AU  - Bohr, Niels
AU  - Nielsen, J. Rud
TI  - Niels Bohr - collected works : the correspondence principle (1918 - 1923)
SN  - 9780444532879
U1  - 539.7 BOH 
PY  - 2008///
CY  - New York
PB  - North - Holland Publishing Company
KW  - Physics
ER  -