Recueil des travaux chimiques des Pays-Bas Volume 115 Issue 12 Issue 11 Issue 10 Issue 9 Issue 8 Issue 7 Issue 6 Issue 5 Issue 4 Issue 3 Issue 2 Issue 1 Volume 114 Issue 12 Issue 11 Issue 10 Issue 9 Issue 8 Issue 7 Issue 6 Issue 5 Issue 4 Issue 3 Issue 2 Issue 1 Volume 113 Issue 12 Issue 11 Issue 10 Issue 9 Issue 8 Issue 7 Issue 6 Issue 4 Issue 3 Issue 2 Issue 1 Volume 112 Issue 12 Issue 11 Issue 10 Issue 9 Issue 8 Issue 7 Issue 6 Issue 5 Issue 4 Issue 3 Issue 2 Issue 1