TY  - BOOK
AU  - John Hopkins University
TI  - School of hygiene and public health
T2  - 1
U1  - 610.7118 
PY  - 1919///
CY  - USA
PB  - Baltimore
KW  - Health and Hygiene
KW  - Medicine -- General
N1  - Gift; health, medicine, preventive health, clinical hygiene
ER  -