Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Francke-Grosmann, H. 1966b. Some investigations on the hazard of intercontinental spread of forest and timber insects. FAO/IUFRO Symposium on internationally dangerous forest diseases and insects. Oxford, 20-29 July 1964. Vol. 1, part I. ii + 7 p.