This book is the third of seven books which introduces the basic principles of accounting. This book focuses on investments intended to be held for greater than one year. It introduces accounting for investments (available for sale, trading, and held to maturity), as well as, special accounting for certain long-term investments. Readers will learn the accounting for property, plant, and equipment, and depreciation methodology and terminology. Accounting for the disposal of property, plant, and equipment, asset exchanges, impairments, natural resource accounting and depletion concepts are also presented in this book.