Arochlors and Environmental PCB Residues ; Data Quality in Large Data Bases ; Analysis of Rainwater Composition ; Mineralogical Analysis of Oil Shales ; High-Resolution GC Data ; Human-Monitoring Data ; Description of Air Pollution ; Air Pollutant Analytical Data ; Cluster Analysis of Atmospheric Particles ; Polycyclic Aromatic Hydrocarbons ; Molecular Connectivity and Multivariate Analysis ; FTIR of Organic Compounds ; Detection of Toxic Chemicals ; The Alpha and Beta of Chemometrics ; Measuring Airborne Asbestos Levels ; Estimation of Spatial Patterns ; SIMCA Pattern Recognition ; Quality Control Protocol ; Statistical Receptor Models