In this book we have made an attempt to present a systematic and detailed study of finitely additive measures as we understand them, filling in any gaps that we discerned. This study of finitely additive measures as a mathematical object, in many of its manifestations, is like a study that a botanist would carry on a particular plant, or that a zoologist would launch on a particular species of mammals, or that a sociologist would initiate about a certain tribe, delving deep into various facets of the subject of interest.
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