000			00421nam a2200145Ia 4500
008			230130s9999||||xx |||||||||||||| ||und||
020			_a9783642377501
100			_aDouglas A. Vakoch
245		0	_aExtraterrestrial Altruism
250			_a2014
260			_bSpringer Berlin Heidelberg _c2014
440			_aThe Frontiers Collection
650			_aPhysics and Astronomy
856			_uhttps://doi.org/10.1007/978-3-642-37750-1
999			_c15330 _d15330