Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Alpine Club classification of the Eastern Alps (German: Alpenvereinseinteilung der Ostalpen) or AVE is a division of the Eastern Alps into 75 mountain groups and is commonly used in mountaineering. There is a basic division into the Northern Limestone Alps, Central Eastern Alps, Western Limestone Alps, and Southern Limestone Alps. These four main groups are further divided into 75 sub-groups. The Alpine Club's classification of the Eastern Alps was compiled by Franz Graßler in 1982 and published in 1984 in the Alpine Club yearbook, Berg '84. It is based on the Moriggl Classification (ME) by Josef Moriggl, the General Secretary of the German and Austrian Alpine Club (DuÖAV), which was first published in 1924 in the Ratgeber für Alpenwanderer ("Guide for Alpine Walkers", 2nd edition, 1928). This division of the Eastern Alps established for the German-speaking world (less Switzerland) was compiled by the German, Austrian and South Tyrol Alpine Clubs.