Search Results       Your search for [author]Jegersten, Gusta, 1903- returned 1 record.           Evolution of the Metazoan life cycle : a comprehensive theory. by Jegersten, Gusta, 1903-; London :[s.n.]: 1972. Subject: Evolution (Biology); Metazoa; Phylogeny.          Add to Book Cart Relevance: 32.22%