000			00314nam a2200133Ia 4500
008			170106s1997||||xx |||||||||||||| ||und||
020			_a0415133416
082			_a160 _bHOW
100			_aColin Howson
245		0	_aLogic with trees
260			_aNew York _bRoutledge _c1997
300			_a197 p, ; 23.5 cm
942			_cBK
999			_c1131 _d1131