TY  - BOOK
AU  - Simpson,Herbert Downs
ED  - National Physicians' Committee for the Extension of Medical Service.
TI  - Health protection,: a study of pre-payment medical service plans,
AV  - R723.5 .S5
U1  - 614.2 
PY  - 1946///]
CY  - Chicago
PB  - The National Physicians' Committee for the Extension of Medical Service
KW  - Health insurance
KW  - Health maintenance organizations
KW  - United States
ER  -