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Author: Schaefer H.A.
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Schaefer H.A. 1949a. Beiträge zur Kenntnis der Psylliden der Schweiz. Mitt. schweiz. ent. Ges., 22:1-96.
Schaefer H.A. 1949b. Biologische und ökologische Beobachtungen an Psylliden (Hemiptera). Verh. Naturf. Ges., 60:25-41.
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