Booklet with blue-green cover. The observations on mathematical language and on teaching calculation by V. (Victor?) Tilmant, President of the association of old students of the normal school of Douai. The contents of the document are extracts from the association's newsletter. 28 pages, 155mm x 235mm. Printed by L. Quarré, Lille. Observations sur le langage mathématique et sur l'enseignement du calcul
Booklet with buff cover. Analytical reform of the rule of three or golden rule and notions of mathematical analysis after Descartes, Pascal and Arnauld by V. (Victor?) Tilmant, President of the association of old students of the normal school of Douai. 64 pages, 155mm x 235mm. Printed by L. Quarré, Lille. Réforme analytique de la règele de trois ou règele d'or et notions d'analyse mathématique
