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Distribution of Salvinia; depletion of water resources and hindrance to water use by Salvinia; Environmental impact of Salvinia; control of Salvinia; Utilisation of Salvinia; Anaerobic digestion; Feasibility studies on Salvinia for energy production; Effect of... more

Properties and uses of treated wood; Environmental Health and Safety measures; Design of Treatment area; Economic aspects of wood preservation; Appendices.

Introduction; What is preservation; Nature of wood; Decay Hazards; wood preservatives; Log protection/ Preservation; Preparation of Materials; Wood Preserving Processes; Treatment methods; Post Treatment Handling; Properties and uses of treated wood; Envi

Contents: Preface; 1) Wildlife in the service of man; 2) Population Ecology of wildlife; 3) Quality of Wildlife Products; 4) Wildlife cropping - Sea mammals; 5) Wildlife cropping -Ungulates; 6) Big game hunting and the Trophy Trade; 7) Wildlife Cropping -... more

Traditionally, plant ecology has focused on the description of plant communities, on nutrient dynamics within these communities, and on environmental factors affecting the ecology of individuals. In recent years, the need for