TY  - BOOK
AU  - Childs,W.H.J., x
AU  - x
TI  - Physical constants: Selected for students
SN  - x
U1  - 530.083/CHP 
PY  - 1964///
CY  - Lond.
PB  - Methuen
KW  - Physics
N1  - x
ER  -