000			00249nam a2200097 4500
999			_c336480 _d336480
082			_a551.41 _bSHE.T
100			_aSheidegger, Adrian E.
245			_aTheoretical Geomorphology _cSheidegger, Adrian E.
260			_aGermany _c1991 _bSpringer
942			_cBK