TY  - BOOK
AU  - Johnstone,Rutherford Thompson
TI  - Occupational medicine and industrial hygiene
AV  - RC963 .J6
U1  - 331.822 
PY  - 1948///
CY  - St. Louis
PB  - C.V. Mosby Co.
KW  - Medicine, Industrial
KW  - Occupational diseases
N1  - Includes bibliographies
ER  -