Geometry I: Basic Ideas and Concepts of Differential Geometry Encyclopaedia of Mathematical Sciences, nr. 28 Editat de R.V. Gamkrelidze et al. 7 noi 1991 Hardback Preț: 763.63 lei 931.27 lei 6-8 săpt. -18%
Geometry IV: Non-regular Riemannian Geometry Encyclopaedia of Mathematical Sciences, nr. 70 Editat de Yu. G. Reshetnyak et al. 21 oct 1993 Hardback Preț: 626.49 lei 737.05 lei 6-8 săpt. -15%