This is a 1st printing of the first authorized chronology of BMW engines, volumes 1 and 2 of the “Dimensions” series, conveys the fascination of BMW engine technology through the ages from 1916 to the year 2000. The 2 volumes were published in 1999 and are by Dr Karlheinz Lange and come with a slipcase. Both volumes are in pristine condition with no inscriptions or marks but the slipcase has a few marks. These volumes are a must have for any BMW enthusiast. A very collectable set of volumes.