Moreover/ gas supplies by the turn of the century will be supplemented by gas from nonconventional domestic sources. The total resources from some of these sources are estimated by AGA to be: tight formations — 500 Tcf; Devonian shales — 225 to 1,800... Clean Air Act Amendments: Hearing Before the Subcommittee on Health and the ... - Stranica 121 napisao/la United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Health and the Environment - 1988 Potpun prikaz -
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