TY  - BOOK
AU  - Zenz,Carl
TI  - Occupational medicine : principles and practical applications 
SN  - 0815198647
AV  - RC963 Z46 1975
PY  - 1975///
CY  - Chicago 
PB  - Year Book Medical Publishers
KW  - Medicine, Industrial
N1  - Includes bibliographies and index
ER  -