1. Ether and theory of elasticity in Beltrami's work

   • Rossana Tazzioli

   OriginalPaper 01 March 1993 Pages: 1 - 37

2. On the history of the principle of least squares

   • Oscar Sheynin

   OriginalPaper 01 March 1993 Pages: 39 - 54

3. “Eratosthenes' measurement of the earth reconsidered”

   • Jacques Dutka

   OriginalPaper 01 March 1993 Pages: 55 - 66

4. Aspects of de La Vallée Poussin's work in approximation and its influence

   • P. L. Butzer
   • R. J. Nessel

   OriginalPaper 01 March 1993 Pages: 67 - 95