000 00354 a2200145 4500
020 _a0749247843
082 _a516.9
_bOPE
090 _c9501
_d13230
245 _aUnit 3
_b non-euclidean geometry
260 _aKeynes
_bThe open university
_c1980
_g1995
300 _a67p.
_c30cm.
650 _aNON-EUCLIDEAN GEOMETRIES
650 _aGEOMETRY
942 _cL
999 _c38088
_d38088