Book reviewed in this article:“USSR Energy Atlas”, compiled by the US Central Intelligence Agency.“Atlas of selected oil and gas reservoir rocks from North America”, by E.J. Biederman Jr.“International Petroleum Encyclopedia 1986”.“Oil and gas directory: 1986–87”.“Oil and Gas Journal Databook: 1986”.“An introduction to carbonate sediments and rocks”, by T.P. Scoffin.“Petroleum geochemistry and source‐rock potential of carbonate r