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  1. Přerušení průtoku plynu v plynovodech uzavíracími balony = Gas flow cut off in pipeworks by gas bags : TPG G 702 06 : schválena dne 20.11.2003 / [GAS, ČSSP, ČSTZ] .  [Praha] :  GAS,  c2003 .  13 s.   [1, currently available 0, at library only 1]
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