Balance beam as a multiple purpose apparatus in gymanstic systems and the great gymnasts of the first half of 19th century - Kaimakamis, Basilis; Papadopoulos, Panagiotis; Duka, Stella; Kaimakamis, Dimitris (Akademia Wychowania Fizycznego w Poznaniu)
Keywords: Jahn; Spiess; gymnastic systems; multiple purpose apparatus; balance