16 



Noll, F. 



1902 Fruchtbildung ohne vorausgegangene Bestaubung (Par- 

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Stout, A. B. 



1918 Fertility in Cichorium Intybus: Self-compatibility and 



self-incompatibility among the offspring of self-fertile 



lines of descent. Jour. Genetics 7, 71-108. 



1920 Further experimental studies on self-incompatibility in 

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