Books published by Larsen and Keller Education

Plumbing is a thriving profession in the modern era. It involves the installation and maintenance of varied drainage systems, sewage systems, septic systems, water recycling, etc. A number of equipments are used in the process of plumbing. Some of these tools are water meters, water filters, pipe wrenches, pipe vise, flaring pliers, etc. Coherent flow of topics, student-friendly language and step-by-step accounts make this book an invaluable source of knowledge. The readers would gain knowledge that would broaden their perspective about plumbing.

Welding is a technique by which different materials are fused together. It may be a part of the fabrication process or used in artistic activities. Welding primarily uses electric current to melt metals and alloys, but gases, lasers and ultrasound may also be used. Development of new technologies, such as the arc welding machine, etc. have allowed welding processes to take place outside industrial settings. The topics covered in this book offer the readers new insights in the field of welding. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.

Fire safety is an important aspect of emergency management as well as occupational safety. The presence of oil, motors and flammable materials create fire hazards and risky situations. Fire inspectors ensure correct protocols are practiced to minimise potential occurence of fires. Effective alarm systems, familiarity with safety exits as well as knowledge in firefighting during emergencies are basic procedures of fire safety. This textbook is a complete source of knowledge on the present status of this important field. It will serve as a valuable source of reference for those interested in the field of fire safety and hazard management.

As a part of statistical modeling, regression analysis is the process and technique of understanding the relationship between dependent and independent variables. It is used in forecasting and prediction. The models used to understand and build relationships, using the linear predictor function, is known as linear models. The different models that come under this vast field are hierarchical linear model, general linear model, generalized linear model, etc. This book presents the complex subject of regression analysis and linear models, in the most comprehensible and easy to understand language. Such selected concepts that redefine the subject have been presented herein. Those with an interest in the field of regression analysis and linear models would find this textbook helpful.

Limnology as a process refers to the study of ponds, rivers, lakes, wetlands, streams, etc. Freshwater biology is a sub-division of limnology. It is the study of freshwater ecosystems, especially their scientific and biological aspects. It studies in detail the relationship of aquatic plants and animals with their ecosystem along with species distribution. This book is a compilation of chapters that discuss the most vital aspects in the field of freshwater biology. Such selected concepts that redefine this field have been presented in it. For all those who are interested in freshwater biology, this textbook can prove to be an essential guide.

Many actions of human beings have led to deforestation which has resulted in loss of biodiversity and natural habitats. Therefore, forestry as a subject is very important, as it deals with process of creating, managing, repairing, covering forests and protecting other environmental habitats. Afforestation or reforestation refers to the process of planting trees in a space which was left barren before. This book mainly focuses on the subject of forestry, with special significance on the areas of deforestation and afforestation. The topics introduced in it cover many new and important theories as well as practices under this field. This textbook is an essential guide for both academicians and those who wish to pursue this discipline further.