TY  - GEN
AU  - Childs W.H.J.
TI  - Physical constants
SN  - 41211620
U1  - 530.8 
PY  - 1934///
CY  - London
PB  - Jhon Wily& Sons INC.
KW  - Physics
N1  - Includes bibliographical references and index
ER  -