000			003400000a22001450004500
245			_aElectronic : build and learn
100			_aPenfold, R.A.
260			_aBoston _bButterworths _c1980
300			_a104p. : ill.
500			_a038452 - RBL 14/90
020			_a0408004541
080			_a621.38 _bP4
041			_aEN
942			_cBK _01
999			_c115163 _d115163