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This book provides an upto date information on metric, connection and curva ture symmetries used in geometry and physics. More specifically, we present the characterizations and classifications of Riemannian and Lorentzian manifolds (in particular, the spacetimes of general relativity) admitting metric (i.e., Killing, ho mothetic and conformal), connection (i.e., affine conformal and projective) and curvature symmetries. Our approach, in this book, has the following outstanding features: (a) It is the first-ever attempt of a comprehensive collection of the works of a very large number of...

Natural resources are very important for the livelihood and sustenance of the people and the economic development of the mountain region of the Garhwal Himalayas. During the past few decades, depletion of natural resources all over the world in general and poor countries including mountain areas in particular, has increased in alarming rate. Natural Resources and their management in Garhwal Himalayas is a comprehensive examination of mountain environment and conservation and management of natural resources. It covers important issues such as forest resource management, water resource...