1 Table of Contents: “...-Lenger, the Mother of Modern Mathematics in Belgium -- 4.The discarding and endurance of the rule...”

2 Table of Contents: “... the World -- 4. Belgium -- 5. France -- 6. United Kingdom -- 7. The Netherlands -- 8. Nordic Countries -- 9...”

3 “... of Taras Shevchenko National University of Kyiv as well as by many others from Belgium, Canada, Great...”

4 “..., a Dutch equivalent of Scientific American, distributed in Belgium and in The Netherlands. Every...”

5 “... illustrations. Jean Mawhin, Université Catholique de Louvain, Belgium "Ferdinand Verhulst has written a true...”