Biston herefordi (male betularia x female strataria): the H.B.D. Kettlewell 1974 hybrids, a report
Clarke, Cyril A. (Cyril Astley), 1907-2000
Article
1980
The entomologist's record and journal of variation
92
70--73
BioStor
English
[London s.n
BioStor: https://biostor.org/reference/187308
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