Burger, H.C., & Ulenberg, S.A. 1990 3.2 Quarantine Problems and Procedures.. Armored Scale Insects, Their Biology, Natural Enemies and Control [Series title: World Crop Pests, Vol. 4B]. Boletin del Museo de Entomologia de la Universidad del Valle Elsevier Amsterdam, the Netherlands 688 pp.

Notes: Abstract: History of trade in transporting plants and methods to control introduction of pests with them; discussion of quarantine regulations; list of species often under quarantine; discussion of importance of identification and documentation; section on risk analysis including chances of pest becoming established and extent of damage that may result; discussion of export and import requirements; recommendations for a better policy on world trade in plants.