APA-čujuhus (7. p.)

U. S. Environmental Protection Agency. Economic impact and small business analysis for petroleum refinery NESHAP , heat exchange systems.

Chicago-čujuhus (17. p.)

U. S. Environmental Protection Agency. Economic Impact and Small Business Analysis for Petroleum Refinery NESHAP , Heat Exchange Systems.

MLA-čujuhus (9. p.)

U. S. Environmental Protection Agency. Economic Impact and Small Business Analysis for Petroleum Refinery NESHAP , Heat Exchange Systems.

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