Title: Life history of two species of plant-lice inhabiting both the witch-hazel and birch
Description: <a href="http://uf.catalog.fcla.edu/uf.jsp?st=UF029625126%26ix=pm%26I=0%26V=D%26pm=1" rel="ugc nofollow">http://uf.catalog.fcla.edu/uf.jsp?st=UF029625126%26ix=pm%26I=0%26V=D%26pm=1</a>
Subjects: Aphids, Aphids--Speciation--History, Aphids--Life cycles, Witch hazels--Diseases and pests, Birch--Diseases and pests.