In Magic Numbers, investment analyst Peter Temple provides a straightforward primer to calculating and interpreting 33 key investment ratios. The book is organized into five sections that explain market-based ratios (e.g., market capitalization, P/E ratios), income statement ratios (margins, earnings per share), balance sheet rations (price/cash ratio, burn rate), cash flow ratios, and risk and volatility ratios. Each chapter clearly shows the inputs necessary to calculate a particular ratio and explains its relevance in evaluating a company's performance. Recommended for serious investors. --Harry C. Edwards