Morrison, Ian K. Mixed growth response of mature black spruce to N, P, and K fertilizers / Ian K. Morrison, Neil W. Foster, D. Al Cameron. -- Sault Ste. Marie : Canadian Forest Service, 1995. -- 1 dvojlist : 1 obr., 4 tab. ; 28 cm. -- (Frontline ; Technical Note No. 68). -- ISBN 0-662-22763-8 (brož.) : .00. -- ISSN 1183-2762

I. Foster, Neil W.
II. Cameron, D. Al
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