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2. Etude de populations de Symphyles en sol cultivé et d’influence de traitements du sol.;Anglade,1967
3. Symphyler – en arthropodegruppe som er lite undersøkt i Norge.;Børset;Fauna,1969
4. The ecology of Symphyla. 1. Populations.;Edwards;Ent. exp. et appl.,1958
5. The ecology of Symphyla. II. Seasonal soil migrations.;Edwards;Ent. exp. et appl.,1959