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Title: Asexual overwintering and morph determination in the lettuce root aphid Pemphigus bursarius (L.).
Author: Phillips, Sarah Wynne.
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 1999
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No abstract available
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Life cycle; Hiemalis; Temperature; Photoperiod Zoology Ecology