Groot, Peter de Control of the white pine weevil in young plantations using a spring application of insecticides / Peter de Groot, Bert Zylstra. -- Sault Ste. Marie : Canadian Forest Service, 1996. -- 1 dvojlist : 3 obr. ; 28 cm. -- (Frontline ; Technical Note No. 86). -- ISBN 0-662-24063-4 (brož.) : .00. -- ISSN 1183-2762

I. Zylstra, Bert

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