TY  - GEN
AU  - Boyd,D R
TI  - The conceptual development of EMS systems in the United States, Part I
SN  - 0094-6575
PY  - 1982///0222
KW  - Emergency Medical Services
KW  - history
KW  - History, 19th Century
KW  - History, 20th Century
KW  - United States
N1  - Publication Type: Historical Article; Journal Article
ER  -