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Recommended by users for its clear explanations and readability. Troeh and Thompson's Soil; and Soil Fertility provides and excellent overview of soils for students in agriculture and the environmental sciences. Now in its sixth edition, this book has been updated throughout and incorporates discussions of GIS (geographic information system) and GPS (global positioning system), humus and its function in soil structure and fertility, soil reclamation for sites contaminated by pesticides or petroleum spills, and advances in the understanding of water flow. In addition a new chapter on soil...

Full Teachers notes for use with Delta Academic Objectives: Listening and note-taking skills Students Book

These proceedings form an analysis of the nonperturbative aspects of strings, branes and supersymmetry. Issues addressed include supermembranes and the Matrix theory; non-supersymmetric strings; superembeddings; aspects of the M5-brane; and domain walls and the universe.

Hartz elaborates his widly discussed "fragment theory" of new societies and projects some of its implications for the modern age.

Gold has traditionally been regarded as inactive as a catalytic metal. However, the advent of nanoparticulate gold on high surface area oxide supports has demonstrated its high catalytic activity in many chemical reactions. Gold is active as a heterogeneous catalyst in both gas and liquid phases, and complexes catalyse reactions homogeneously in solution. Many of the reactions being studied will lead to new application areas for catalysis by gold in pollution control, chemical processing, sensors and fuel cell technology. This book describes the properties of gold, the methods for preparing...