Diaspididae of the World 2.0: Biosystematics of the oystershell scale, Lepidosaphes ulmi (L.) (Homoptera: Diaspididae) in Maryland. PhD Thesis. Ann Arbor, MI, USA: University Microfilms Catalogue 79722671 (Dissertation 73-9-700). 108pp.

Authors(s)	Garrett, W.T.
Year	1973
Title	Biosystematics of the oystershell scale, Lepidosaphes ulmi (L.) (Homoptera: Diaspididae) in Maryland. PhD Thesis. Ann Arbor, MI, USA: University Microfilms Catalogue 79722671 (Dissertation 73-9-700). 108pp.