APA-viite (7. p.)

Heimbigner Brian & PennWell Corporation. Treating FGD wastewater , phase 2 clean air act amendments make it hot topic.

Chicago-viite (17. p.)

Heimbigner Brian ja PennWell Corporation. Treating FGD Wastewater , Phase 2 Clean Air Act Amendments Make It Hot Topic.

MLA-viite (9. p.)

Heimbigner Brian ja PennWell Corporation. Treating FGD Wastewater , Phase 2 Clean Air Act Amendments Make It Hot Topic.

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