Evolutionary trends in Foraminifera a collection of papers dedicated to I. M. van der Vlerk on the occasion of his 70th birthday - Koenigswald, G. H. R. von (Gustav Heinrich Ralph) 1902-1982 (Amsterdam New York Elsevier Pub. Co., 1963)
In English, French, and German.
Keywords: Vlerk, I. M. van der -- 1892-.; Foraminifera, Fossil