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Removing Douglas-fir cones with a lower-crown branch shaker
- COPES, Donald L. - RANDALL, W. K. - O'ROURKE, D. Removing Douglas-fir cones with a lower-crown branch shaker. In Tree Planters' Notes, 2000, vol. 49, no. 3, s. 51-55Error: read handle in (rep.epca.fmtISO690).fmtXDatabaze.
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