The X-band EPR spectra of the UV -, X -, and γ irradiated glasses of the SiO2-Na2O-CaO-P2O5 (Bioglass) and CaO-Ga2O3-GeO2 systems with different chemical compositions have been investigated at temperatures 77 and 300 K. It was shown that the efficiency of generation of the electron and hole centers in glasses of both systems strongly depends on their basic composition and is almost independent ...