https://www.abebooks.com/9781583661239/Hero-System-6th-Edition-Advanced-1583661239/plp
Hero System 6th Edition Advanced Players' Guide - Steven S. Long: 9781583661239 - AbeBooks
For experts only! The Hero System 6th Edition Advanced rules set includes optional rules culled from a wide variety of sources, including existing supplements...
hero system 6th editionadvanced players