Ski Skating With Champions (Book) by Einar Svensson

This is the most comprehensive text on ski skating there is, written by World Masters Champion and Norwegian-Swedish top level coach. Text, 350 action-sequence pics, drawings show 17 different techniques (for all levels of skiers). Also has analysis of skiing and skating mechanics, results of wind tunnel testing. Useful for in-line skaters, too. 272 pages.