Water. Aquatic microbiology 4 Enviromental management 2 Growth 2 QR Microbiology 2 TD Environmental technology. Sanitary engineering 2 Aquatic sports. Water sports 1 Bacteria 1 Dyeing 1 Ecology 1 Environmental pollution 1 Fertilizers and improvement of the soil 1 Food chains (Ecology). Food webs 1 Forensic Medicine. Medical jurisprudence. Legal medicine 1 Fungal antigens 1 Games and amusements 1 Geographic information systems 1 Geographical distribution. Biogeography. Phylogeography 1 Image processing 1 Influence of special factors in the environment 1 Inorganic polymers 1 Insects 1 Laboratories. General works 1 Microbial ecology 1 Natural History Including nature conservation, geographical distribution 1 Qualities of water. Water quality 1 Relation to psychology. Sports psychology 1 Remote Sensing 1 Sewage disposal systems 1 Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships 1 Textile fabrics 1