000			00538nam a22001457a 4500
008			110314t xxu||||| |||| 00| 0 eng d
020			_a052143923 X
020			_a9780521439237
082			_221 _a510
245	0	0	_aExpressions with letters
260			_aCambridge : _bPress syndicate of the University of Cambridge, _cc1992.
300			_a16 p. : _bill. (some col.). ;
942			_2ddc _cBK
999			_c14678 _d14678