How many primary rules publications are available for players according to the Rules of Golf?

The Rules of Golf for players are encapsulated in three primary publications, each serving a distinct purpose. The first is the full rule book, which provides comprehensive guidelines on all aspects of the game, including the general rules of play, specific rules for various forms of play, and interpretations of those rules. The second publication is the "Rules of Golf: A Guide for Players," which distills the full rules into a more accessible format, helping players understand the key regulations without being overwhelmed by detail. Lastly, there is the "Decisions on the Rules of Golf," which offers specific rulings and clarifications on unusual or complex scenarios that players might encounter on the course. This threefold publication structure is designed to support players of all levels in understanding and applying the rules effectively.