| Coxeter, H.S.M. | Regular Polytopes | 50 (51) Geometry |
| Coxeter, H.S.M | Regular Polytopes | 50 (51) Geometry |
| Heyting, A | Axiomatic Projective Geometry | 50 (51) Geometry |
| Maxwell, E.A. | The Methods of Plane Projective Geometry | 50 (51) Geometry |
| Maxwell, E.A. | The Methods of Plane Projective Geometry Based on the Use of General Homogeneous Coordinates | 50 (51) Geometry |
| Pickert, Gunter | Projective Ebenen | 50 (51) Geometry |
| Pogorelov, A. | Geometry | 50 (51) Geometry |
| Pogorelov, A. | Geometry | 50 (51) Geometry |
| Robinson, G. | The Foundations of Geometry | 50 (51) Geometry |
| Segre, Beniamino | Lecture on Modern Geometry | 50 (51) Geometry |