by SHKURATOVA L.N.,SU, BORESKOV G.K.,SU, POPOV B.I.,SU
Year of Publication 30.06.1978

by SHKURATOVA L.N.,SU, POPOV T.S.,SU, BORESKOV G.K.,SU, POPOV B.I.,SU, BLIZNAKOV G.M.(NRB),BG
Year of Publication 05.07.1978

by SHKURATOVA L.N.,SU, SHEPLEV V.S.,SU, BORESKOV G.K.,SU, SLINKO M.G.,SU, POPOV B.I.,SU
Year of Publication 05.07.1978

by SHKURATOVA L.N.,SU, BORESKOV G.K.,SU, POPOV T.S.,BG, POPOV B.I.,SU, BLIZNAKOV G.M.,BG
Year of Publication 30.06.1978