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Ботанический сад ПетрГУ
Совет ботанических садов России, Беларуси и Казахстана.
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First frost
Last noon of December
Start of short snowless summer
Daffodils in mid-May
Oak in autumn
Spring birch
Autumn birch
First flower
Alexey Prokhorov site Botanic Garden of Petrozavodsk State University Calypso software Information-Analitical System Concil of botanical gardens of Russia Hortus botanicus - Journal Searching system