TY - JOUR TI - Characterizations of Finite Projective and Affine Spaces JO - Canadian journal of mathematics PY - 1969 SP - 64 EP - 75 VL - 21 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-007-9/ DO - 10.4153/CJM-1969-007-9 ID - 10_4153_CJM_1969_007_9 ER -