Indoor air. Part 14. Determination of total (gas and particle phase) polychlorinated dioxin-like biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDDs/PCDFs). Extraction, clean-up and analysis by high resolution gas chromatography and mass spectrometry
National spatial data system. Spatial data in urban planning. General requirements for the unified electronic cartographic basis usage in urban planning activity