000			00426cam a2200145u 4500
082			_a516 _bDUR _cL-2, P-5
100	1		_aDurell, Clement V. _939337
245	1	2	_aA concise geometrical conics,
260			_aLondon, _bMacmillan and co., limited, _c1941.
300			_axvi, 99, [1] p. _bdiagrs. _c19 cm.
526			_a0 _b0 _c0 _d516_000000000000000_DUR
650		0	_aConic sections. _939338
650		0	_aMCE _9379
942			_2ddc _cBK
999			_c543840 _d543840