Cephem and cepham compounds
Cephem and cepham compounds
Cephem and cepham compounds
Cephem carbonylmethyl derivatives
Cephem compound and composition
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds
Cephem compounds