October 1946 - May 1947
The Board of the Electrotechnische Vereeniging of {period} has been constituted as follows:
J. van Ravensteijn | President |
J.M. Heyning | Secretaris |
W.H.L. van Helsdingen | Thesaurier |
Albert Delsman | Vice-President |
J.J. Oosterbaan | Commissaris |