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040 |aCaOODSP|beng
043 |an-cn---
0861 |aA43-1066/1961E-PDF
1101 |aCanada.|bAgriculture Canada.|bResearch Branch.
24510|aEcology of the aspen parkland of Western Canada in relation to land use / |h[electronic resource]|cby Ralph D. Bird.
260 |aOttawa - Ontario : |bAgriculture Canada. |cFebruary 1961.
300 |a184p.|bmaps, references, photographs, index
500 |aHistorical publication digitized by Agriculture and Agri-Food Canada.
590 |a13-17-Supp|b2013-07-25
69007|aEcology|2gcpds
85640|ahttp://publications.gc.ca|qPDF|s17.97 MB|uhttps://publications.gc.ca/collections/collection_2013/aac-aafc/agrhist/A43-1066-1961-eng.pdf