Butterflies in Scandinavia, 1969
Johnson, George, 1903-1980
Article
1969
The entomologist's record and journal of variation
81
316--318
BioStor
English
[London s.n
BioStor: https://biostor.org/reference/188920
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http://creativecommons.org/licenses/by-nc-sa/3.0/
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