000			00419nmm a2200145Ia 4500
008			230125s9999||||xx |||||||||||||||||und||
020			_a9783319053868
100			_aPiero Mella
245		4	_aThe Magic Ring
250			_a2014
260			_bSpringer International Publishing _c2014
440			_aContemporary Systems Thinking
650			_aMathematics and Statistics
856			_uhttps://doi.org/10.1007/978-3-319-05386-8
999			_c5893 _d5893