Water, Air, & Soil Pollution
Water, Air, & Soil Pollution > 1999 > 109 > 1-4 > 1-15
Water, Air, & Soil Pollution > 1999 > 109 > 1-4 > 41-52
Water, Air, & Soil Pollution > 1999 > 109 > 1-4 > 303-312
Water, Air, & Soil Pollution > 1999 > 115 > 1-4 > 371-384