The practical examples and step-by-step calculations in the book, partnered with illustrations and diagrams, make the text easy to read and understand. Johnston does an excellent job clarifying international oilfield taxation and regulation in the same way he explained oilfield accounting in his other PennWell title, Oil Company Financial Analysis in Nontechnical Language. Covers everything from historical development of contracts to terminology of accounting and negotiations, to threshold field size analysis, to arithmetic behind contract terms, and much more.