DRILLING MUD
VERKHOVSKAYA NADEZHDA N,SU, MURADOV IGOR M,SU, BRAGINA LARISA V,SU, GRANEVA TAMARA A,SU, KAMARYAN SERGEJ G,SU, KASHKAROV NIKOLAJ G,SU, BUDKO ANDREJ V,SU
Year of Publication 30.11.1992
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Year of Publication 30.11.1992
Patent