000			00409nam a2200145Ia 4500
008			230130s9999||||xx |||||||||||||| ||und||
020			_a9781493913077
100			_aBen Evans
245		4	_aThe Twenty-first Century in Space
250			_a2015
260			_bSpringer New York _c2015
440			_aSpringer Praxis Books
650			_aPhysics and Astronomy
856			_uhttps://doi.org/10.1007/978-1-4939-1307-7
999			_c16937 _d16937