TY  - BOOK
AU  - Zahner H
AU  -  Maas W K
TI  - Biology of antibiotics
T2  - Heidelberg science library
U1  - L:6:G, L2 
PY  - 1972///
CY  - New York    
PB  -  Springer-Verlag        
KW  -  Antibiotics
KW  - Medicine
ER  -