]> Ph.D. in mathematical sciences (Biology & Genetics) at Leiden Univ.(1972); Prof. of Genetics at Institute of Biology, Leiden Univ (1968~); Explored for Sempervivums in S Europe (1970s-90s), Zuid Africa (2000) & Mexico (2005). Botany Zonneveld, Bernardus Joannes Maria Zonneveld, Bernardus Joannes Maria B. J. M. Zonneveld Zonn. Zonneveld Bernardus (Ben) Joannes Maria Zonneveld 1940