(NhRONOMETRAVNYE ISSLEDOWANIQ NA UGOLXNYH [AHTAH (B/ s - (NdONECKIJ NAU^NO(B-(NISSLEDOWATELXSKIJ UGOLXNYJ INSTITUTs; (NdNEPROPETROWSKIJ GORNYJ INSTITUT IM(B. (NaRTEMAs ((NmOSKWA (B: s (NuGLETEHIZDAT(B,s, 1959)
Keywords: (NhRONOMETRAV s; (NrABO^IJ DENX (B- (NfOTOGRAFIROWANIEs