23609 1931 10 its economics and technology LANG, A. Scheffer Additional Author Soberman, Richard M. Additional Author mixed material Cambridge (USA) M.I.T. Press 1964 LAZIC, Vera B. Additional Author mixed material Beograd Gradjevinska knjiga 1964 LEJKIN, A.E. Additional Author Porockij, E.S. Additional Author Rodin, B.I. Additional Author mixed material Moskva Masinostroenie 1964 Prohorov, Ju.V. Additional Author LEHMANN, E.L. Additional Author mixed material Moskva Nauka 1964 LEONT\'EV, A.P. Additional Author Ljuban, E.I. Additional Author Pustovojt, P.T. Additional Author mixed material Moskva Transport 1964 (skripta). Deo 1 i 2 LEVE, Gysbert de Primary Author Kriens, Jacobus Additional Author mixed material Beograd Jugoslovenski Zavod za Produktivnost Rada 1964 LEVIN, Ja.I. Primary Author mixed material Moskva Masinostroenie 1964 Lancberg, Julij Saulovic Additional Author Rusevskij, Petr Vjaceslavovic Additional Author Nahimov, Boris Naumovic Additional Author mixed material Moskva Strojizdat 1964 Kovalenko, I.N. Additional Author LLOYD, David K. Additional Author Bipov, Miron Additional Author Rusakov, G.A. Additional Author Buslenko, N.P. Additional Author mixed material Moskva Sovetskoe radio 1964 Hua, Loo-Keng Additional Author Lo-gen, Hua Additional Author Polosuev, A.M. Additional Author Cudakov, N.G. Additional Author mixed material Moskva Mir 1964