000			00307 a2200133 4500
082			_a510 _bDOU
090			_c9644 _d13428
100			_aDouglis, Avron
245			_aIdeas in mathematics
260			_aLondon _bW.B. Saunders _c1970 _g1970
300			_axxvi, 784p. _c25cm.
650			_aMathematics
942			_cL
999			_c38220 _d38220