TY  - BOOK
AU  - Worsnop, Bernard Lister,
AU  - Chalkin, Francis Cecil
TI  - X-rays
U1  - 537.535  WOR 
PY  - 1950///
CY  - London
PB  - Methuen
KW  - X-rays
N1  - Includes bibliography: p. 123
ER  -