000			00408nmm a2200133Ia 4500
008			230201s9999||||xx |||||||||||||||||und||
020			_a9781461299172
100			_aR. Courant
245		0	_aDirichlet’s Principle, Conformal Mapping, and Minimal Surfaces
250			_a1950
260			_bSpringer New York _c1950
650			_aMathematics and Statistics
856			_uhttps://doi.org/10.1007/978-1-4612-9917-2
999			_c22511 _d22511