Vakeva, Jouni Sirex - online information about tree pests and diseases / Jouni Vakeva. -- 1.vyd.

In Paperi Ja Puu - Paper and Timber. -- Vol.78, No.3. (1996), S : 86-87. obr.

I. Paperi Ja Puu - Paper and Timber. -- Vol.78, No.3. (1996), S : 86-87. obr.
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