Walton, John
Chester A. Arnold
Thomas Maxwell Harris
Edouard Boureau
H. D. MacGinitie
Equipo Editorial
Theodore Delevoryas
Ethel I. Sanborn
David White
Paul Kenrick
John A. Talent
Herman Frederick Becker
British Museum (Natural History). Department of Geology
Symposium on Sporopollenin (1970 Imperial College of Science and Technology)
Volker Mosbrugger
Alan R. Hemsley
Sonia Archila
Else Marie Friis