Sims, Richard A. Management of black spruce dominated vegetation types of northwestern Ontario / Richard A. Sims, H. Maureen Kershaw. -- Sault Ste. Marie : Canadian Forest Service, 1994. -- 1 dvojlist : 2 obr., 1 tab. ; 28 cm. -- (Frontline ; Technical Note 57). -- ISBN 0-662-22602-X (brož.) : .00. -- ISSN 1183-2762

I. Kershaw, H. Maureen
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