This major revision of a bestselling text shows that soil is three-dimensional and dynamic. This concept is developed in the first two chapters and is built on throughout the book. Chapters 3 through 7 explore soil physical properties and water, with expanded coverage of tillage and traffic and an increased emphasis on water and wind erosion processes. Chapters 8 through 11 discuss the biological aspects of soils as well as their mineralogical and chemical properties. In Chapters 12 through 15, the general area of soil fertility and fertilizer use is covered. Other chapters examine soil genesis, taxonomy, geography, land use and soil survey, and land use interpretations. Finally in chapter 20, the importance of nonagronomic factors in the food population problem are discussed. Both English and metric units are used for crop yields, new figures and tables are included, summary statements are given at the end of the more difficult sections and at the end of each chapter, and non-agricultural examples and several computer applications are provided for reference.

This book is geared toward two broad audiences. Technical managers responsible for planning, designing, and supporting Visual Basic applications should read it with a view to understanding what they can and can't expect from the teams they are or will be managing and what capabilities Visual Basic 6 has. Developers responsible for designing, programming, and implementing Visual Basic applications within the corporate arena should study it to find out how other experts handle the common, yet often complex and frustrating, problems they are likely to encounter (or are already wrestling with).

Power Transformers features extensive coverage on zigzag, Scott, tee, wye, and delta connections … tap changing under load and variable-phase shifting … advantages and disadvantages in coil selection and construction … symmetrical components … transformer nameplate rating, thermal capability, and rate calculation of loss of life … abnormal operating conditions such as overloads, short circuits, single phasing from primary fuse operations, ferroresonance, and voltage surges … proper system design and selection to reduce faulty operation … and preventive and predictive maintenance, good utility practices, factory and field testing, and failure rate analysis.