Diphtheria
How to Recognize the Disease
How to Keep from Catching It
How to Treat Those Who Do Catch It
KEEP WELL SERIES No. 4
TREASURY DEPARTMENT
UNITED STATES PUBLIC HEALTH SERVICE
1919
GOVERNMENT PRINTING OFFICE
How to Recognize the Disease
How to Keep from Catching It
How to Treat Those Who Do Catch It
KEEP WELL SERIES No. 4
TREASURY DEPARTMENT
UNITED STATES PUBLIC HEALTH SERVICE
1919
GOVERNMENT PRINTING OFFICE