METHOD AND APPARATUS FOR WELDING GIRTH JOINTS IN PIPE LINES von KUTOVOI, ANDREI N, SHLEPAKOV, VALERY N, SHEINKIN, MARK Z, PATON, VLADIMIR E, KOTOV, VALENTIN A, SAPRYKIN, JURY I, UNIGOVSKY, MIKHAIL R, DUBOVETSKY, VASILY Y, GAVRILJUK, JURY A, ROTENFELD, VENIAMIN S, SERAFIN, OREST M, PATON, BORIS E, MAZEL, ALEXANDR G, KOPYLOV, LEONID N, SLEPCHENKO, VLADIMIR I, LESCHINSKY, EFIM Y, POKHODNYA, IGOR K, BELFOR, MIKHAIL G

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