Davis, True, Jr.: Philips-Roxane Facilities File, 1964
The staff was limited to a few workers of the first hour,among Mr. E.P. Van Marken, Mr. F. Kummerstein and Mr. B.J.A. Heespelink
The staff was limited to a few workers of the first hour,among Mr. E.P. Van Marken, Mr. F. Kummerstein and Mr. B.J.A. Heespelink
