He kept the position for 10 years; in 1971 he was succeeded by Henk van Riemsdijk.
In 1971, he was succeeded by Henk van Riemsdijk. He kept the position for 10 years.
He kept the position for 10 years. In 1971, he was succeeded by Henk van Riemsdijk.
He kept the position for 10 years. In 1971, he was succeeded by Henk van Riemsdijk.