title: In memoriam: Pieter Dullemeijer (1925-2004).
authors.affiliation: Institute of Biology, Leiden University, Leiden, The Netherlands.
authors.forename: J L
authors.initials: JL
authors.lastname: Dubbeldam
mesh_terms: D000715:Anatomy; D000818:Animals; D005075:Biological Evolution; D015509:Developmental Biology; D006801:Humans; D015046:Zoology