(NfIZIKA TWERDOGO TELA (B:s (NsBORNIK STATEJ (B/s - (NdU[ENKO(B, (Nw(B.(Np(B.s; (NkIEWSKIJ GOSUDARSTWENNYJ PEDAGOGI^ESKIJ INSTITUT IM(B. (Na(B.(Nm(B. (NgORXKOGOs ((NkIEW (B:s (Nb(B. (NI(B.,s, 1972)
Keywords: (NfIZIKA TWERDOGO TELAs