TY  - BOOK
AU  - Welch, Henry
TI  - Principle and practice of antibiotic therapy 
U1  - 615.329 21st ed
PY  - 1954///
CY  - New York
PB  - Medical Encyclopedia
KW  - Antibiotic
KW  - Penicillin
KW  - surgical infections
KW  - Treponemal diseases
ER  -