Wood, Jim E. Establishment of white spruce and black spruce in Boreal Ontario:Effects of chemical site preparation and post-planting weed control / J.E. Wood, F.W. Althen. -- 1.vyd.

In The Forestry Chronicle. -- Vol.69, No.5. (1993), s. 554-560. graf.

I. Althen, Fred W. von
II. The Forestry Chronicle. -- Vol.69, No.5. (1993), s. 554-560. graf.
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