000 00342nam a2200145Ia 4500
008 190807s9999 xx 000 0 und d
020 _a521567068
100 _aEk Jan Ate van
_956
245 0 _aThreshold 1990
250 _aRev. and corr. ed.
260 _aCambridge
260 _bCambridge University Press
260 _c1998
300 _c23 cm.
999 _c59
_d59